Migrate to $localize

 * Remove i18n polyfill to translate things in components
 * Reduce bundle sizes
 * Improve runtime perf
 * Reduce a lot the time to make a full client build
 * Reduce client build complexity
 * We don't need a service to translate things anymore (so we will be able to translate title pages etc)

Unfortunately we may loose some translations in the migration process.
I'll put a message on weblate to notify translators

54 files changed, 430 insertions, 574 deletions

diff --git a/client/src/app/shared/shared-abuse-list/abuse-details.component.ts b/client/src/app/shared/shared-abuse-list/abuse-details.component.ts
index 0e872079a..282a6fe19 100644
--- a/client/src/app/shared/shared-abuse-list/abuse-details.component.ts
+++ b/client/src/app/shared/shared-abuse-list/abuse-details.component.ts
@@ -1,7 +1,6 @@
 import { Component, Input } from '@angular/core'
 import { durationToString } from '@app/helpers'
 import { Actor } from '@app/shared/shared-main'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { AbusePredefinedReasonsString } from '@shared/models'
 import { ProcessedAbuse } from './processed-abuse.model'
 
@@ -17,18 +16,16 @@ export class AbuseDetailsComponent {
 
   private predefinedReasonsTranslations: { [key in AbusePredefinedReasonsString]: string }
 
-  constructor (
-    private i18n: I18n
-  ) {
+  constructor () {
     this.predefinedReasonsTranslations = {
-      violentOrRepulsive: this.i18n('Violent or Repulsive'),
-      hatefulOrAbusive: this.i18n('Hateful or Abusive'),
-      spamOrMisleading: this.i18n('Spam or Misleading'),
-      privacy: this.i18n('Privacy'),
-      rights: this.i18n('Copyright'),
-      serverRules: this.i18n('Server rules'),
-      thumbnails: this.i18n('Thumbnails'),
-      captions: this.i18n('Captions')
+      violentOrRepulsive: $localize`Violent or Repulsive`,
+      hatefulOrAbusive: $localize`Hateful or Abusive`,
+      spamOrMisleading: $localize`Spam or Misleading`,
+      privacy: $localize`Privacy`,
+      rights: $localize`Copyright`,
+      serverRules: $localize`Server rules`,
+      thumbnails: $localize`Thumbnails`,
+      captions: $localize`Captions`
     }
   }
 
diff --git a/client/src/app/shared/shared-abuse-list/abuse-list-table.component.ts b/client/src/app/shared/shared-abuse-list/abuse-list-table.component.ts
index c7dc5f4d2..cc933db0d 100644
--- a/client/src/app/shared/shared-abuse-list/abuse-list-table.component.ts
+++ b/client/src/app/shared/shared-abuse-list/abuse-list-table.component.ts
@@ -1,16 +1,15 @@
 import * as debug from 'debug'
 import truncate from 'lodash-es/truncate'
 import { SortMeta } from 'primeng/api'
-import { buildVideoOrPlaylistEmbed, buildVideoLink } from 'src/assets/player/utils'
+import { buildVideoLink, buildVideoOrPlaylistEmbed } from 'src/assets/player/utils'
 import { environment } from 'src/environments/environment'
-import { AfterViewInit, Component, OnInit, ViewChild, Input } from '@angular/core'
+import { AfterViewInit, Component, Input, OnInit, ViewChild } from '@angular/core'
 import { DomSanitizer } from '@angular/platform-browser'
 import { ActivatedRoute, Params, Router } from '@angular/router'
 import { ConfirmService, MarkdownService, Notifier, RestPagination, RestTable } from '@app/core'
 import { Account, Actor, DropdownAction, Video, VideoService } from '@app/shared/shared-main'
 import { AbuseService, BlocklistService, VideoBlockService } from '@app/shared/shared-moderation'
 import { VideoCommentService } from '@app/shared/shared-video-comment'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { AbuseState, AdminAbuse } from '@shared/models'
 import { AbuseMessageModalComponent } from './abuse-message-modal.component'
 import { ModerationCommentModalComponent } from './moderation-comment-modal.component'
@@ -45,7 +44,6 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
     private videoService: VideoService,
     private videoBlocklistService: VideoBlockService,
     private confirmService: ConfirmService,
-    private i18n: I18n,
     private markdownRenderer: MarkdownService,
     private sanitizer: DomSanitizer,
     private route: ActivatedRoute,
@@ -157,12 +155,12 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
   }
 
   async removeAbuse (abuse: AdminAbuse) {
-    const res = await this.confirmService.confirm(this.i18n('Do you really want to delete this abuse report?'), this.i18n('Delete'))
+    const res = await this.confirmService.confirm($localize`Do you really want to delete this abuse report?`, $localize`Delete`)
     if (res === false) return
 
     this.abuseService.removeAbuse(abuse).subscribe(
       () => {
-        this.notifier.success(this.i18n('Abuse deleted.'))
+        this.notifier.success($localize`Abuse deleted.`)
         this.loadData()
       },
 
@@ -238,7 +236,7 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
 
             if (abuse.comment) {
               if (abuse.comment.deleted) {
-                abuse.truncatedCommentHtml = abuse.commentHtml = this.i18n('Deleted comment')
+                abuse.truncatedCommentHtml = abuse.commentHtml = $localize`Deleted comment`
               } else {
                 const truncated = truncate(abuse.comment.text, { length: 100 })
                 abuse.truncatedCommentHtml = await this.markdownRenderer.textMarkdownToHTML(truncated, true)
@@ -267,38 +265,38 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
   private buildInternalActions (): DropdownAction<ProcessedAbuse>[] {
     return [
       {
-        label: this.i18n('Internal actions'),
+        label: $localize`Internal actions`,
         isHeader: true
       },
       {
         label: this.isAdminView()
-          ? this.i18n('Messages with reporter')
-          : this.i18n('Messages with moderators'),
+          ? $localize`Messages with reporter`
+          : $localize`Messages with moderators`,
         handler: abuse => this.openAbuseMessagesModal(abuse),
         isDisplayed: abuse => this.isLocalAbuse(abuse)
       },
       {
-        label: this.i18n('Update internal note'),
+        label: $localize`Update internal note`,
         handler: abuse => this.openModerationCommentModal(abuse),
         isDisplayed: abuse => this.isAdminView() && !!abuse.moderationComment
       },
       {
-        label: this.i18n('Mark as accepted'),
+        label: $localize`Mark as accepted`,
         handler: abuse => this.updateAbuseState(abuse, AbuseState.ACCEPTED),
         isDisplayed: abuse => this.isAdminView() && !this.isAbuseAccepted(abuse)
       },
       {
-        label: this.i18n('Mark as rejected'),
+        label: $localize`Mark as rejected`,
         handler: abuse => this.updateAbuseState(abuse, AbuseState.REJECTED),
         isDisplayed: abuse => this.isAdminView() && !this.isAbuseRejected(abuse)
       },
       {
-        label: this.i18n('Add internal note'),
+        label: $localize`Add internal note`,
         handler: abuse => this.openModerationCommentModal(abuse),
         isDisplayed: abuse => this.isAdminView() && !abuse.moderationComment
       },
       {
-        label: this.i18n('Delete report'),
+        label: $localize`Delete report`,
         handler: abuse => this.isAdminView() && this.removeAbuse(abuse)
       }
     ]
@@ -309,19 +307,19 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
 
     return [
       {
-        label: this.i18n('Actions for the flagged account'),
+        label: $localize`Actions for the flagged account`,
         isHeader: true,
         isDisplayed: abuse => abuse.flaggedAccount && !abuse.comment && !abuse.video
       },
 
       {
-        label: this.i18n('Mute account'),
+        label: $localize`Mute account`,
         isDisplayed: abuse => abuse.flaggedAccount && !abuse.comment && !abuse.video,
         handler: abuse => this.muteAccountHelper(abuse.flaggedAccount)
       },
 
       {
-        label: this.i18n('Mute server account'),
+        label: $localize`Mute server account`,
         isDisplayed: abuse => abuse.flaggedAccount && !abuse.comment && !abuse.video,
         handler: abuse => this.muteServerHelper(abuse.flaggedAccount.host)
       }
@@ -333,19 +331,19 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
 
     return [
       {
-        label: this.i18n('Actions for the reporter'),
+        label: $localize`Actions for the reporter`,
         isHeader: true,
         isDisplayed: abuse => !!abuse.reporterAccount
       },
 
       {
-        label: this.i18n('Mute reporter'),
+        label: $localize`Mute reporter`,
         isDisplayed: abuse => !!abuse.reporterAccount,
         handler: abuse => this.muteAccountHelper(abuse.reporterAccount)
       },
 
       {
-        label: this.i18n('Mute server'),
+        label: $localize`Mute server`,
         isDisplayed: abuse => abuse.reporterAccount && !abuse.reporterAccount.userId,
         handler: abuse => this.muteServerHelper(abuse.reporterAccount.host)
       }
@@ -357,18 +355,18 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
 
     return [
       {
-        label: this.i18n('Actions for the video'),
+        label: $localize`Actions for the video`,
         isHeader: true,
         isDisplayed: abuse => abuse.video && !abuse.video.deleted
       },
       {
-        label: this.i18n('Block video'),
+        label: $localize`Block video`,
         isDisplayed: abuse => abuse.video && !abuse.video.deleted && !abuse.video.blacklisted,
         handler: abuse => {
           this.videoBlocklistService.blockVideo(abuse.video.id, undefined, true)
             .subscribe(
               () => {
-                this.notifier.success(this.i18n('Video blocked.'))
+                this.notifier.success($localize`Video blocked.`)
 
                 this.updateAbuseState(abuse, AbuseState.ACCEPTED)
               },
@@ -378,13 +376,13 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
         }
       },
       {
-        label: this.i18n('Unblock video'),
+        label: $localize`Unblock video`,
         isDisplayed: abuse => abuse.video && !abuse.video.deleted && abuse.video.blacklisted,
         handler: abuse => {
           this.videoBlocklistService.unblockVideo(abuse.video.id)
             .subscribe(
               () => {
-                this.notifier.success(this.i18n('Video unblocked.'))
+                this.notifier.success($localize`Video unblocked.`)
 
                 this.updateAbuseState(abuse, AbuseState.ACCEPTED)
               },
@@ -394,19 +392,19 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
         }
       },
       {
-        label: this.i18n('Delete video'),
+        label: $localize`Delete video`,
         isDisplayed: abuse => abuse.video && !abuse.video.deleted,
         handler: async abuse => {
           const res = await this.confirmService.confirm(
-            this.i18n('Do you really want to delete this video?'),
-            this.i18n('Delete')
+            $localize`Do you really want to delete this video?`,
+            $localize`Delete`
           )
           if (res === false) return
 
           this.videoService.removeVideo(abuse.video.id)
             .subscribe(
               () => {
-                this.notifier.success(this.i18n('Video deleted.'))
+                this.notifier.success($localize`Video deleted.`)
 
                 this.updateAbuseState(abuse, AbuseState.ACCEPTED)
               },
@@ -423,25 +421,25 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
 
     return [
       {
-        label: this.i18n('Actions for the comment'),
+        label: $localize`Actions for the comment`,
         isHeader: true,
         isDisplayed: abuse => abuse.comment && !abuse.comment.deleted
       },
 
       {
-        label: this.i18n('Delete comment'),
+        label: $localize`Delete comment`,
         isDisplayed: abuse => abuse.comment && !abuse.comment.deleted,
         handler: async abuse => {
           const res = await this.confirmService.confirm(
-            this.i18n('Do you really want to delete this comment?'),
-            this.i18n('Delete')
+            $localize`Do you really want to delete this comment?`,
+            $localize`Delete`
           )
           if (res === false) return
 
           this.commentService.deleteVideoComment(abuse.comment.video.id, abuse.comment.id)
             .subscribe(
               () => {
-                this.notifier.success(this.i18n('Comment deleted.'))
+                this.notifier.success($localize`Comment deleted.`)
 
                 this.updateAbuseState(abuse, AbuseState.ACCEPTED)
               },
@@ -457,10 +455,7 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
     this.blocklistService.blockAccountByInstance(account)
       .subscribe(
         () => {
-          this.notifier.success(
-            this.i18n('Account {{nameWithHost}} muted by the instance.', { nameWithHost: account.nameWithHost })
-          )
-
+          this.notifier.success($localize`Account ${account.nameWithHost} muted by the instance.`)
           account.mutedByInstance = true
         },
 
@@ -472,9 +467,7 @@ export class AbuseListTableComponent extends RestTable implements OnInit, AfterV
     this.blocklistService.blockServerByInstance(host)
       .subscribe(
         () => {
-          this.notifier.success(
-            this.i18n('Server {{host}} muted by the instance.', { host: host })
-          )
+          this.notifier.success($localize`Server ${host} muted by the instance.`)
         },
 
         err => this.notifier.error(err.message)
diff --git a/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts b/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
index 6686d91f4..0c3c8ff48 100644
--- a/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
+++ b/client/src/app/shared/shared-abuse-list/abuse-message-modal.component.ts
@@ -1,9 +1,8 @@
-import { Component, ElementRef, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
-import { AuthService, Notifier, HtmlRendererService } from '@app/core'
+import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
+import { AuthService, HtmlRendererService, Notifier } from '@app/core'
 import { AbuseValidatorsService, FormReactive, FormValidatorService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { AbuseMessage, UserAbuse } from '@shared/models'
 import { AbuseService } from '../shared-moderation'
 
@@ -31,7 +30,6 @@ export class AbuseMessageModalComponent extends FormReactive implements OnInit {
     protected formValidatorService: FormValidatorService,
     private abuseValidatorsService: AbuseValidatorsService,
     private modalService: NgbModal,
-    private i18n: I18n,
     private htmlRenderer: HtmlRendererService,
     private auth: AuthService,
     private notifier: Notifier,
@@ -99,10 +97,10 @@ export class AbuseMessageModalComponent extends FormReactive implements OnInit {
 
   getPlaceholderMessage () {
     if (this.isAdminView) {
-      return this.i18n('Add a message to communicate with the reporter')
+      return $localize`Add a message to communicate with the reporter`
     }
 
-    return this.i18n('Add a message to communicate with the moderation team')
+    return $localize`Add a message to communicate with the moderation team`
   }
 
   private loadMessages () {
diff --git a/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts b/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
index ecb7966bf..fad7f888d 100644
--- a/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
+++ b/client/src/app/shared/shared-abuse-list/moderation-comment-modal.component.ts
@@ -1,10 +1,9 @@
 import { Component, EventEmitter, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier } from '@app/core'
-import { FormReactive, FormValidatorService, AbuseValidatorsService } from '@app/shared/shared-forms'
+import { AbuseValidatorsService, FormReactive, FormValidatorService } from '@app/shared/shared-forms'
 import { AbuseService } from '@app/shared/shared-moderation'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { AdminAbuse } from '@shared/models'
 
 @Component({
@@ -24,8 +23,7 @@ export class ModerationCommentModalComponent extends FormReactive implements OnI
     private modalService: NgbModal,
     private notifier: Notifier,
     private abuseService: AbuseService,
-    private abuseValidatorsService: AbuseValidatorsService,
-    private i18n: I18n
+    private abuseValidatorsService: AbuseValidatorsService
   ) {
     super()
   }
@@ -57,7 +55,7 @@ export class ModerationCommentModalComponent extends FormReactive implements OnI
     this.abuseService.updateAbuse(this.abuseToComment, { moderationComment })
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Comment updated.'))
+            this.notifier.success($localize`Comment updated.`)
 
             this.commentUpdated.emit(moderationComment)
             this.hide()
diff --git a/client/src/app/shared/shared-forms/form-validators/abuse-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/abuse-validators.service.ts
index 5f15963f3..56d30d6f9 100644
--- a/client/src/app/shared/shared-forms/form-validators/abuse-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/abuse-validators.service.ts
@@ -1,6 +1,5 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
@@ -9,31 +8,31 @@ export class AbuseValidatorsService {
   readonly ABUSE_MODERATION_COMMENT: BuildFormValidator
   readonly ABUSE_MESSAGE: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.ABUSE_REASON = {
       VALIDATORS: [ Validators.required, Validators.minLength(2), Validators.maxLength(3000) ],
       MESSAGES: {
-        'required': this.i18n('Report reason is required.'),
-        'minlength': this.i18n('Report reason must be at least 2 characters long.'),
-        'maxlength': this.i18n('Report reason cannot be more than 3000 characters long.')
+        'required': $localize`Report reason is required.`,
+        'minlength': $localize`Report reason must be at least 2 characters long.`,
+        'maxlength': $localize`Report reason cannot be more than 3000 characters long.`
       }
     }
 
     this.ABUSE_MODERATION_COMMENT = {
       VALIDATORS: [ Validators.required, Validators.minLength(2), Validators.maxLength(3000) ],
       MESSAGES: {
-        'required': this.i18n('Moderation comment is required.'),
-        'minlength': this.i18n('Moderation comment must be at least 2 characters long.'),
-        'maxlength': this.i18n('Moderation comment cannot be more than 3000 characters long.')
+        'required': $localize`Moderation comment is required.`,
+        'minlength': $localize`Moderation comment must be at least 2 characters long.`,
+        'maxlength': $localize`Moderation comment cannot be more than 3000 characters long.`
       }
     }
 
     this.ABUSE_MESSAGE = {
       VALIDATORS: [ Validators.required, Validators.minLength(2), Validators.maxLength(3000) ],
       MESSAGES: {
-        'required': this.i18n('Abuse message is required.'),
-        'minlength': this.i18n('Abuse message must be at least 2 characters long.'),
-        'maxlength': this.i18n('Abuse message cannot be more than 3000 characters long.')
+        'required': $localize`Abuse message is required.`,
+        'minlength': $localize`Abuse message must be at least 2 characters long.`,
+        'maxlength': $localize`Abuse message cannot be more than 3000 characters long.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/batch-domains-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/batch-domains-validators.service.ts
index f270b602b..6c7da833f 100644
--- a/client/src/app/shared/shared-forms/form-validators/batch-domains-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/batch-domains-validators.service.ts
@@ -1,6 +1,5 @@
 import { Injectable } from '@angular/core'
 import { ValidatorFn, Validators } from '@angular/forms'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { BuildFormValidator } from './form-validator.service'
 import { validateHost } from './host'
 
@@ -8,13 +7,13 @@ import { validateHost } from './host'
 export class BatchDomainsValidatorsService {
   readonly DOMAINS: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.DOMAINS = {
       VALIDATORS: [ Validators.required, this.validDomains, this.isHostsUnique ],
       MESSAGES: {
-        'required': this.i18n('Domain is required.'),
-        'validDomains': this.i18n('Domains entered are invalid.'),
-        'uniqueDomains': this.i18n('Domains entered contain duplicates.')
+        'required': $localize`Domain is required.`,
+        'validDomains': $localize`Domains entered are invalid.`,
+        'uniqueDomains': $localize`Domains entered contain duplicates.`
       }
     }
   }
@@ -33,7 +32,7 @@ export class BatchDomainsValidatorsService {
 
     for (const host of hosts) {
       if (validateHost(host) === false) {
-        newHostsErrors.push(this.i18n('{{host}} is not valid', { host }))
+        newHostsErrors.push($localize`${host} is not valid`)
       }
     }
 
diff --git a/client/src/app/shared/shared-forms/form-validators/custom-config-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/custom-config-validators.service.ts
index c77aba6a1..862ff5470 100644
--- a/client/src/app/shared/shared-forms/form-validators/custom-config-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/custom-config-validators.service.ts
@@ -1,7 +1,6 @@
+import { Injectable } from '@angular/core'
 import { Validators } from '@angular/forms'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { BuildFormValidator } from './form-validator.service'
-import { Injectable } from '@angular/core'
 
 @Injectable()
 export class CustomConfigValidatorsService {
@@ -16,82 +15,82 @@ export class CustomConfigValidatorsService {
   readonly INDEX_URL: BuildFormValidator
   readonly SEARCH_INDEX_URL: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.INSTANCE_NAME = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Instance name is required.')
+        'required': $localize`Instance name is required.`
       }
     }
 
     this.INSTANCE_SHORT_DESCRIPTION = {
       VALIDATORS: [ Validators.max(250) ],
       MESSAGES: {
-        'max': this.i18n('Short description should not be longer than 250 characters.')
+        'max': $localize`Short description should not be longer than 250 characters.`
       }
     }
 
     this.SERVICES_TWITTER_USERNAME = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Twitter username is required.')
+        'required': $localize`Twitter username is required.`
       }
     }
 
     this.CACHE_PREVIEWS_SIZE = {
       VALIDATORS: [ Validators.required, Validators.min(1), Validators.pattern('[0-9]+') ],
       MESSAGES: {
-        'required': this.i18n('Previews cache size is required.'),
-        'min': this.i18n('Previews cache size must be greater than 1.'),
-        'pattern': this.i18n('Previews cache size must be a number.')
+        'required': $localize`Previews cache size is required.`,
+        'min': $localize`Previews cache size must be greater than 1.`,
+        'pattern': $localize`Previews cache size must be a number.`
       }
     }
 
     this.CACHE_CAPTIONS_SIZE = {
       VALIDATORS: [ Validators.required, Validators.min(1), Validators.pattern('[0-9]+') ],
       MESSAGES: {
-        'required': this.i18n('Captions cache size is required.'),
-        'min': this.i18n('Captions cache size must be greater than 1.'),
-        'pattern': this.i18n('Captions cache size must be a number.')
+        'required': $localize`Captions cache size is required.`,
+        'min': $localize`Captions cache size must be greater than 1.`,
+        'pattern': $localize`Captions cache size must be a number.`
       }
     }
 
     this.SIGNUP_LIMIT = {
       VALIDATORS: [ Validators.required, Validators.min(-1), Validators.pattern('-?[0-9]+') ],
       MESSAGES: {
-        'required': this.i18n('Signup limit is required.'),
-        'min': this.i18n('Signup limit must be greater than 1.'),
-        'pattern': this.i18n('Signup limit must be a number.')
+        'required': $localize`Signup limit is required.`,
+        'min': $localize`Signup limit must be greater than 1.`,
+        'pattern': $localize`Signup limit must be a number.`
       }
     }
 
     this.ADMIN_EMAIL = {
       VALIDATORS: [ Validators.required, Validators.email ],
       MESSAGES: {
-        'required': this.i18n('Admin email is required.'),
-        'email': this.i18n('Admin email must be valid.')
+        'required': $localize`Admin email is required.`,
+        'email': $localize`Admin email must be valid.`
       }
     }
 
     this.TRANSCODING_THREADS = {
       VALIDATORS: [ Validators.required, Validators.min(0) ],
       MESSAGES: {
-        'required': this.i18n('Transcoding threads is required.'),
-        'min': this.i18n('Transcoding threads must be greater or equal to 0.')
+        'required': $localize`Transcoding threads is required.`,
+        'min': $localize`Transcoding threads must be greater or equal to 0.`
       }
     }
 
     this.INDEX_URL = {
       VALIDATORS: [ Validators.pattern(/^https:\/\//) ],
       MESSAGES: {
-        'pattern': this.i18n('Index URL should be a URL')
+        'pattern': $localize`Index URL should be a URL`
       }
     }
 
     this.SEARCH_INDEX_URL = {
       VALIDATORS: [ Validators.pattern(/^https?:\/\//) ],
       MESSAGES: {
-        'pattern': this.i18n('Search index URL should be a URL')
+        'pattern': $localize`Search index URL should be a URL`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/instance-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/instance-validators.service.ts
index 96a35a48f..3628f0b60 100644
--- a/client/src/app/shared/shared-forms/form-validators/instance-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/instance-validators.service.ts
@@ -1,7 +1,6 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
+import { Injectable } from '@angular/core'
 import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
-import { Injectable } from '@angular/core'
 
 @Injectable()
 export class InstanceValidatorsService {
@@ -10,13 +9,13 @@ export class InstanceValidatorsService {
   readonly SUBJECT: BuildFormValidator
   readonly BODY: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
 
     this.FROM_EMAIL = {
       VALIDATORS: [ Validators.required, Validators.email ],
       MESSAGES: {
-        'required': this.i18n('Email is required.'),
-        'email': this.i18n('Email must be valid.')
+        'required': $localize`Email is required.`,
+        'email': $localize`Email must be valid.`
       }
     }
 
@@ -27,9 +26,9 @@ export class InstanceValidatorsService {
         Validators.maxLength(120)
       ],
       MESSAGES: {
-        'required': this.i18n('Your name is required.'),
-        'minlength': this.i18n('Your name must be at least 1 character long.'),
-        'maxlength': this.i18n('Your name cannot be more than 120 characters long.')
+        'required': $localize`Your name is required.`,
+        'minlength': $localize`Your name must be at least 1 character long.`,
+        'maxlength': $localize`Your name cannot be more than 120 characters long.`
       }
     }
 
@@ -40,9 +39,9 @@ export class InstanceValidatorsService {
         Validators.maxLength(120)
       ],
       MESSAGES: {
-        'required': this.i18n('A subject is required.'),
-        'minlength': this.i18n('The subject must be at least 1 character long.'),
-        'maxlength': this.i18n('The subject cannot be more than 120 characters long.')
+        'required': $localize`A subject is required.`,
+        'minlength': $localize`The subject must be at least 1 character long.`,
+        'maxlength': $localize`The subject cannot be more than 120 characters long.`
       }
     }
 
@@ -53,9 +52,9 @@ export class InstanceValidatorsService {
         Validators.maxLength(5000)
       ],
       MESSAGES: {
-        'required': this.i18n('A message is required.'),
-        'minlength': this.i18n('The message must be at least 3 characters long.'),
-        'maxlength': this.i18n('The message cannot be more than 5000 characters long.')
+        'required': $localize`A message is required.`,
+        'minlength': $localize`The message must be at least 3 characters long.`,
+        'maxlength': $localize`The message cannot be more than 5000 characters long.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/login-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/login-validators.service.ts
index a5837357e..67ea11f20 100644
--- a/client/src/app/shared/shared-forms/form-validators/login-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/login-validators.service.ts
@@ -1,6 +1,5 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
@@ -8,13 +7,13 @@ export class LoginValidatorsService {
   readonly LOGIN_USERNAME: BuildFormValidator
   readonly LOGIN_PASSWORD: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.LOGIN_USERNAME = {
       VALIDATORS: [
         Validators.required
       ],
       MESSAGES: {
-        'required': this.i18n('Username is required.')
+        'required': $localize`Username is required.`
       }
     }
 
@@ -23,7 +22,7 @@ export class LoginValidatorsService {
         Validators.required
       ],
       MESSAGES: {
-        'required': this.i18n('Password is required.')
+        'required': $localize`Password is required.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/reset-password-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/reset-password-validators.service.ts
index d2085a309..3d0b4dd64 100644
--- a/client/src/app/shared/shared-forms/form-validators/reset-password-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/reset-password-validators.service.ts
@@ -1,19 +1,18 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class ResetPasswordValidatorsService {
   readonly RESET_PASSWORD_CONFIRM: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.RESET_PASSWORD_CONFIRM = {
       VALIDATORS: [
         Validators.required
       ],
       MESSAGES: {
-        'required': this.i18n('Confirmation of the password is required.')
+        'required': $localize`Confirmation of the password is required.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/user-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/user-validators.service.ts
index 61486bbab..312fc9b1e 100644
--- a/client/src/app/shared/shared-forms/form-validators/user-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/user-validators.service.ts
@@ -1,7 +1,6 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
+import { Injectable } from '@angular/core'
 import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
-import { Injectable } from '@angular/core'
 
 @Injectable()
 export class UserValidatorsService {
@@ -20,7 +19,7 @@ export class UserValidatorsService {
 
   readonly USER_BAN_REASON: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
 
     this.USER_USERNAME = {
       VALIDATORS: [
@@ -30,10 +29,10 @@ export class UserValidatorsService {
         Validators.pattern(/^[a-z0-9][a-z0-9._]*$/)
       ],
       MESSAGES: {
-        'required': this.i18n('Username is required.'),
-        'minlength': this.i18n('Username must be at least 1 character long.'),
-        'maxlength': this.i18n('Username cannot be more than 50 characters long.'),
-        'pattern': this.i18n('Username should be lowercase alphanumeric; dots and underscores are allowed.')
+        'required': $localize`Username is required.`,
+        'minlength': $localize`Username must be at least 1 character long.`,
+        'maxlength': $localize`Username cannot be more than 50 characters long.`,
+        'pattern': $localize`Username should be lowercase alphanumeric; dots and underscores are allowed.`
       }
     }
 
@@ -45,18 +44,18 @@ export class UserValidatorsService {
         Validators.pattern(/^[a-z0-9][a-z0-9._]*$/)
       ],
       MESSAGES: {
-        'required': this.i18n('Channel name is required.'),
-        'minlength': this.i18n('Channel name must be at least 1 character long.'),
-        'maxlength': this.i18n('Channel name cannot be more than 50 characters long.'),
-        'pattern': this.i18n('Channel name should be lowercase alphanumeric; dots and underscores are allowed.')
+        'required': $localize`Channel name is required.`,
+        'minlength': $localize`Channel name must be at least 1 character long.`,
+        'maxlength': $localize`Channel name cannot be more than 50 characters long.`,
+        'pattern': $localize`Channel name should be lowercase alphanumeric; dots and underscores are allowed.`
       }
     }
 
     this.USER_EMAIL = {
       VALIDATORS: [ Validators.required, Validators.email ],
       MESSAGES: {
-        'required': this.i18n('Email is required.'),
-        'email': this.i18n('Email must be valid.')
+        'required': $localize`Email is required.`,
+        'email': $localize`Email must be valid.`
       }
     }
 
@@ -67,9 +66,9 @@ export class UserValidatorsService {
         Validators.maxLength(255)
       ],
       MESSAGES: {
-        'required': this.i18n('Password is required.'),
-        'minlength': this.i18n('Password must be at least 6 characters long.'),
-        'maxlength': this.i18n('Password cannot be more than 255 characters long.')
+        'required': $localize`Password is required.`,
+        'minlength': $localize`Password must be at least 6 characters long.`,
+        'maxlength': $localize`Password cannot be more than 255 characters long.`
       }
     }
 
@@ -79,37 +78,37 @@ export class UserValidatorsService {
         Validators.maxLength(255)
       ],
       MESSAGES: {
-        'minlength': this.i18n('Password must be at least 6 characters long.'),
-        'maxlength': this.i18n('Password cannot be more than 255 characters long.')
+        'minlength': $localize`Password must be at least 6 characters long.`,
+        'maxlength': $localize`Password cannot be more than 255 characters long.`
       }
     }
 
     this.USER_CONFIRM_PASSWORD = {
       VALIDATORS: [],
       MESSAGES: {
-        'matchPassword': this.i18n('The new password and the confirmed password do not correspond.')
+        'matchPassword': $localize`The new password and the confirmed password do not correspond.`
       }
     }
 
     this.USER_VIDEO_QUOTA = {
       VALIDATORS: [ Validators.required, Validators.min(-1) ],
       MESSAGES: {
-        'required': this.i18n('Video quota is required.'),
-        'min': this.i18n('Quota must be greater than -1.')
+        'required': $localize`Video quota is required.`,
+        'min': $localize`Quota must be greater than -1.`
       }
     }
     this.USER_VIDEO_QUOTA_DAILY = {
       VALIDATORS: [ Validators.required, Validators.min(-1) ],
       MESSAGES: {
-        'required': this.i18n('Daily upload limit is required.'),
-        'min': this.i18n('Daily upload limit must be greater than -1.')
+        'required': $localize`Daily upload limit is required.`,
+        'min': $localize`Daily upload limit must be greater than -1.`
       }
     }
 
     this.USER_ROLE = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('User role is required.')
+        'required': $localize`User role is required.`
       }
     }
 
@@ -121,8 +120,8 @@ export class UserValidatorsService {
         Validators.maxLength(1000)
       ],
       MESSAGES: {
-        'minlength': this.i18n('Description must be at least 3 characters long.'),
-        'maxlength': this.i18n('Description cannot be more than 1000 characters long.')
+        'minlength': $localize`Description must be at least 3 characters long.`,
+        'maxlength': $localize`Description cannot be more than 1000 characters long.`
       }
     }
 
@@ -131,7 +130,7 @@ export class UserValidatorsService {
         Validators.requiredTrue
       ],
       MESSAGES: {
-        'required': this.i18n('You must agree with the instance terms in order to register on it.')
+        'required': $localize`You must agree with the instance terms in order to register on it.`
       }
     }
 
@@ -141,8 +140,8 @@ export class UserValidatorsService {
         Validators.maxLength(250)
       ],
       MESSAGES: {
-        'minlength': this.i18n('Ban reason must be at least 3 characters long.'),
-        'maxlength': this.i18n('Ban reason cannot be more than 250 characters long.')
+        'minlength': $localize`Ban reason must be at least 3 characters long.`,
+        'maxlength': $localize`Ban reason cannot be more than 250 characters long.`
       }
     }
   }
@@ -154,9 +153,9 @@ export class UserValidatorsService {
         Validators.maxLength(120)
       ],
       MESSAGES: {
-        'required': this.i18n('Display name is required.'),
-        'minlength': this.i18n('Display name must be at least 1 character long.'),
-        'maxlength': this.i18n('Display name cannot be more than 50 characters long.')
+        'required': $localize`Display name is required.`,
+        'minlength': $localize`Display name must be at least 1 character long.`,
+        'maxlength': $localize`Display name cannot be more than 50 characters long.`
       }
     }
 
diff --git a/client/src/app/shared/shared-forms/form-validators/video-accept-ownership-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-accept-ownership-validators.service.ts
index 998d616ec..aed9e9cdd 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-accept-ownership-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-accept-ownership-validators.service.ts
@@ -1,17 +1,16 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class VideoAcceptOwnershipValidatorsService {
   readonly CHANNEL: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.CHANNEL = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('The channel is required.')
+        'required': $localize`The channel is required.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-block-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-block-validators.service.ts
index ddf0ab5eb..bce1880dc 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-block-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-block-validators.service.ts
@@ -1,18 +1,17 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class VideoBlockValidatorsService {
   readonly VIDEO_BLOCK_REASON: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.VIDEO_BLOCK_REASON = {
       VALIDATORS: [ Validators.minLength(2), Validators.maxLength(300) ],
       MESSAGES: {
-        'minlength': this.i18n('Block reason must be at least 2 characters long.'),
-        'maxlength': this.i18n('Block reason cannot be more than 300 characters long.')
+        'minlength': $localize`Block reason must be at least 2 characters long.`,
+        'maxlength': $localize`Block reason cannot be more than 300 characters long.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-captions-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-captions-validators.service.ts
index 280d28414..7e90264e5 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-captions-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-captions-validators.service.ts
@@ -1,6 +1,5 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
@@ -8,19 +7,19 @@ export class VideoCaptionsValidatorsService {
   readonly VIDEO_CAPTION_LANGUAGE: BuildFormValidator
   readonly VIDEO_CAPTION_FILE: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
 
     this.VIDEO_CAPTION_LANGUAGE = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Video caption language is required.')
+        'required': $localize`Video caption language is required.`
       }
     }
 
     this.VIDEO_CAPTION_FILE = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Video caption file is required.')
+        'required': $localize`Video caption file is required.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-change-ownership-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-change-ownership-validators.service.ts
index 59659defd..8c809a0d5 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-change-ownership-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-change-ownership-validators.service.ts
@@ -1,18 +1,17 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { AbstractControl, ValidationErrors, Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { AbstractControl, ValidationErrors, Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class VideoChangeOwnershipValidatorsService {
   readonly USERNAME: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.USERNAME = {
       VALIDATORS: [ Validators.required, this.localAccountValidator ],
       MESSAGES: {
-        'required': this.i18n('The username is required.'),
-        'localAccountOnly': this.i18n('You can only transfer ownership to a local account')
+        'required': $localize`The username is required.`,
+        'localAccountOnly': $localize`You can only transfer ownership to a local account`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-channel-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-channel-validators.service.ts
index bb650b149..3e7444196 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-channel-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-channel-validators.service.ts
@@ -1,6 +1,5 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
@@ -10,7 +9,7 @@ export class VideoChannelValidatorsService {
   readonly VIDEO_CHANNEL_DESCRIPTION: BuildFormValidator
   readonly VIDEO_CHANNEL_SUPPORT: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.VIDEO_CHANNEL_NAME = {
       VALIDATORS: [
         Validators.required,
@@ -19,10 +18,10 @@ export class VideoChannelValidatorsService {
         Validators.pattern(/^[a-z0-9][a-z0-9._]*$/)
       ],
       MESSAGES: {
-        'required': this.i18n('Name is required.'),
-        'minlength': this.i18n('Name must be at least 1 character long.'),
-        'maxlength': this.i18n('Name cannot be more than 50 characters long.'),
-        'pattern': this.i18n('Name should be lowercase alphanumeric; dots and underscores are allowed.')
+        'required': $localize`Name is required.`,
+        'minlength': $localize`Name must be at least 1 character long.`,
+        'maxlength': $localize`Name cannot be more than 50 characters long.`,
+        'pattern': $localize`Name should be lowercase alphanumeric; dots and underscores are allowed.`
       }
     }
 
@@ -33,9 +32,9 @@ export class VideoChannelValidatorsService {
         Validators.maxLength(50)
       ],
       MESSAGES: {
-        'required': i18n('Display name is required.'),
-        'minlength': i18n('Display name must be at least 1 character long.'),
-        'maxlength': i18n('Display name cannot be more than 50 characters long.')
+        'required': $localize`Display name is required.`,
+        'minlength': $localize`Display name must be at least 1 character long.`,
+        'maxlength': $localize`Display name cannot be more than 50 characters long.`
       }
     }
 
@@ -45,8 +44,8 @@ export class VideoChannelValidatorsService {
         Validators.maxLength(1000)
       ],
       MESSAGES: {
-        'minlength': i18n('Description must be at least 3 characters long.'),
-        'maxlength': i18n('Description cannot be more than 1000 characters long.')
+        'minlength': $localize`Description must be at least 3 characters long.`,
+        'maxlength': $localize`Description cannot be more than 1000 characters long.`
       }
     }
 
@@ -56,8 +55,8 @@ export class VideoChannelValidatorsService {
         Validators.maxLength(1000)
       ],
       MESSAGES: {
-        'minlength': i18n('Support text must be at least 3 characters long.'),
-        'maxlength': i18n('Support text cannot be more than 1000 characters long.')
+        'minlength': $localize`Support text must be at least 3 characters long.`,
+        'maxlength': $localize`Support text cannot be more than 1000 characters long`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-comment-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-comment-validators.service.ts
index 97c8e967e..18e7ae264 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-comment-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-comment-validators.service.ts
@@ -1,19 +1,18 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class VideoCommentValidatorsService {
   readonly VIDEO_COMMENT_TEXT: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.VIDEO_COMMENT_TEXT = {
       VALIDATORS: [ Validators.required, Validators.minLength(1), Validators.maxLength(3000) ],
       MESSAGES: {
-        'required': this.i18n('Comment is required.'),
-        'minlength': this.i18n('Comment must be at least 2 characters long.'),
-        'maxlength': this.i18n('Comment cannot be more than 3000 characters long.')
+        'required': $localize`Comment is required.`,
+        'minlength': $localize`Comment must be at least 2 characters long.`,
+        'maxlength': $localize`Comment cannot be more than 3000 characters long.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-playlist-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-playlist-validators.service.ts
index ab9c43625..3b45a40fd 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-playlist-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-playlist-validators.service.ts
@@ -1,8 +1,7 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { AbstractControl, FormControl, Validators } from '@angular/forms'
 import { Injectable } from '@angular/core'
-import { BuildFormValidator } from './form-validator.service'
+import { AbstractControl, Validators } from '@angular/forms'
 import { VideoPlaylistPrivacy } from '@shared/models'
+import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
 export class VideoPlaylistValidatorsService {
@@ -11,7 +10,7 @@ export class VideoPlaylistValidatorsService {
   readonly VIDEO_PLAYLIST_DESCRIPTION: BuildFormValidator
   readonly VIDEO_PLAYLIST_CHANNEL_ID: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
     this.VIDEO_PLAYLIST_DISPLAY_NAME = {
       VALIDATORS: [
         Validators.required,
@@ -19,9 +18,9 @@ export class VideoPlaylistValidatorsService {
         Validators.maxLength(120)
       ],
       MESSAGES: {
-        'required': this.i18n('Display name is required.'),
-        'minlength': this.i18n('Display name must be at least 1 character long.'),
-        'maxlength': this.i18n('Display name cannot be more than 120 characters long.')
+        'required': $localize`Display name is required.`,
+        'minlength': $localize`Display name must be at least 1 character long.`,
+        'maxlength': $localize`Display name cannot be more than 120 characters long.`
       }
     }
 
@@ -30,7 +29,7 @@ export class VideoPlaylistValidatorsService {
         Validators.required
       ],
       MESSAGES: {
-        'required': this.i18n('Privacy is required.')
+        'required': $localize`Privacy is required.`
       }
     }
 
@@ -40,15 +39,15 @@ export class VideoPlaylistValidatorsService {
         Validators.maxLength(1000)
       ],
       MESSAGES: {
-        'minlength': i18n('Description must be at least 3 characters long.'),
-        'maxlength': i18n('Description cannot be more than 1000 characters long.')
+        'minlength': $localize`Description must be at least 3 characters long.`,
+        'maxlength': $localize`Description cannot be more than 1000 characters long.`
       }
     }
 
     this.VIDEO_PLAYLIST_CHANNEL_ID = {
       VALIDATORS: [ ],
       MESSAGES: {
-        'required': this.i18n('The channel is required when the playlist is public.')
+        'required': $localize`The channel is required when the playlist is public.`
       }
     }
   }
diff --git a/client/src/app/shared/shared-forms/form-validators/video-validators.service.ts b/client/src/app/shared/shared-forms/form-validators/video-validators.service.ts
index c96e4ef66..8119c1ae7 100644
--- a/client/src/app/shared/shared-forms/form-validators/video-validators.service.ts
+++ b/client/src/app/shared/shared-forms/form-validators/video-validators.service.ts
@@ -1,6 +1,5 @@
-import { I18n } from '@ngx-translate/i18n-polyfill'
-import { Validators, ValidatorFn, ValidationErrors, AbstractControl } from '@angular/forms'
 import { Injectable } from '@angular/core'
+import { AbstractControl, ValidationErrors, ValidatorFn, Validators } from '@angular/forms'
 import { BuildFormValidator } from './form-validator.service'
 
 @Injectable()
@@ -19,21 +18,21 @@ export class VideoValidatorsService {
   readonly VIDEO_SCHEDULE_PUBLICATION_AT: BuildFormValidator
   readonly VIDEO_ORIGINALLY_PUBLISHED_AT: BuildFormValidator
 
-  constructor (private i18n: I18n) {
+  constructor () {
 
     this.VIDEO_NAME = {
       VALIDATORS: [ Validators.required, Validators.minLength(3), Validators.maxLength(120) ],
       MESSAGES: {
-        'required': this.i18n('Video name is required.'),
-        'minlength': this.i18n('Video name must be at least 3 characters long.'),
-        'maxlength': this.i18n('Video name cannot be more than 120 characters long.')
+        'required': $localize`Video name is required.`,
+        'minlength': $localize`Video name must be at least 3 characters long.`,
+        'maxlength': $localize`Video name cannot be more than 120 characters long.`
       }
     }
 
     this.VIDEO_PRIVACY = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Video privacy is required.')
+        'required': $localize`Video privacy is required.`
       }
     }
 
@@ -60,46 +59,46 @@ export class VideoValidatorsService {
     this.VIDEO_CHANNEL = {
       VALIDATORS: [ Validators.required ],
       MESSAGES: {
-        'required': this.i18n('Video channel is required.')
+        'required': $localize`Video channel is required.`
       }
     }
 
     this.VIDEO_DESCRIPTION = {
       VALIDATORS: [ Validators.minLength(3), Validators.maxLength(10000) ],
       MESSAGES: {
-        'minlength': this.i18n('Video description must be at least 3 characters long.'),
-        'maxlength': this.i18n('Video description cannot be more than 10000 characters long.')
+        'minlength': $localize`Video description must be at least 3 characters long.`,
+        'maxlength': $localize`Video description cannot be more than 10000 characters long.`
       }
     }
 
     this.VIDEO_TAG = {
       VALIDATORS: [ Validators.minLength(2), Validators.maxLength(30) ],
       MESSAGES: {
-        'minlength': this.i18n('A tag should be more than 2 characters long.'),
-        'maxlength': this.i18n('A tag should be less than 30 characters long.')
+        'minlength': $localize`A tag should be more than 2 characters long.`,
+        'maxlength': $localize`A tag should be less than 30 characters long.`
       }
     }
 
     this.VIDEO_TAGS_ARRAY = {
       VALIDATORS: [ Validators.maxLength(5), this.arrayTagLengthValidator() ],
       MESSAGES: {
-        'maxlength': this.i18n('A maximum of 5 tags can be used on a video.'),
-        'arrayTagLength': this.i18n('A tag should be more than 2, and less than 30 characters long.')
+        'maxlength': $localize`A maximum of 5 tags can be used on a video.`,
+        'arrayTagLength': $localize`A tag should be more than 2, and less than 30 characters long.`
       }
     }
 
     this.VIDEO_SUPPORT = {
       VALIDATORS: [ Validators.minLength(3), Validators.maxLength(1000) ],
       MESSAGES: {
-        'minlength': this.i18n('Video support must be at least 3 characters long.'),
-        'maxlength': this.i18n('Video support cannot be more than 1000 characters long.')
+        'minlength': $localize`Video support must be at least 3 characters long.`,
+        'maxlength': $localize`Video support cannot be more than 1000 characters long.`
       }
     }
 
     this.VIDEO_SCHEDULE_PUBLICATION_AT = {
       VALIDATORS: [ ],
       MESSAGES: {
-        'required': this.i18n('A date is required to schedule video update.')
+        'required': $localize`A date is required to schedule video update.`
       }
     }
 
diff --git a/client/src/app/shared/shared-forms/input-readonly-copy.component.ts b/client/src/app/shared/shared-forms/input-readonly-copy.component.ts
index 7528fb7a1..a67b0c691 100644
--- a/client/src/app/shared/shared-forms/input-readonly-copy.component.ts
+++ b/client/src/app/shared/shared-forms/input-readonly-copy.component.ts
@@ -1,6 +1,5 @@
 import { Component, Input } from '@angular/core'
 import { Notifier } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-input-readonly-copy',
@@ -10,12 +9,9 @@ import { I18n } from '@ngx-translate/i18n-polyfill'
 export class InputReadonlyCopyComponent {
   @Input() value = ''
 
-  constructor (
-    private notifier: Notifier,
-    private i18n: I18n
-  ) { }
+  constructor (private notifier: Notifier) { }
 
   activateCopiedMessage () {
-    this.notifier.success(this.i18n('Copied'))
+    this.notifier.success($localize`Copied`)
   }
 }
diff --git a/client/src/app/shared/shared-forms/preview-upload.component.ts b/client/src/app/shared/shared-forms/preview-upload.component.ts
index 7afff0b31..a55dcdd9a 100644
--- a/client/src/app/shared/shared-forms/preview-upload.component.ts
+++ b/client/src/app/shared/shared-forms/preview-upload.component.ts
@@ -2,7 +2,6 @@ import { Component, forwardRef, Input, OnInit } from '@angular/core'
 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
 import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser'
 import { ServerService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig } from '@shared/models'
 import { BytesPipe } from '../shared-main'
 
@@ -34,11 +33,10 @@ export class PreviewUploadComponent implements OnInit, ControlValueAccessor {
 
   constructor (
     private sanitizer: DomSanitizer,
-    private serverService: ServerService,
-    private i18n: I18n
+    private serverService: ServerService
   ) {
     this.bytesPipe = new BytesPipe()
-    this.maxSizeText = this.i18n('max size')
+    this.maxSizeText = $localize`max size`
   }
 
   get videoImageExtensions () {
diff --git a/client/src/app/shared/shared-forms/reactive-file.component.ts b/client/src/app/shared/shared-forms/reactive-file.component.ts
index 9ebf487ce..eeb2a3fd8 100644
--- a/client/src/app/shared/shared-forms/reactive-file.component.ts
+++ b/client/src/app/shared/shared-forms/reactive-file.component.ts
@@ -2,7 +2,6 @@ import { Component, EventEmitter, forwardRef, Input, OnInit, Output } from '@ang
 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
 import { Notifier } from '@app/core'
 import { GlobalIconName } from '@app/shared/shared-icons'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-reactive-file',
@@ -31,10 +30,7 @@ export class ReactiveFileComponent implements OnInit, ControlValueAccessor {
 
   private file: File
 
-  constructor (
-    private notifier: Notifier,
-    private i18n: I18n
-  ) {}
+  constructor (private notifier: Notifier) { }
 
   get filename () {
     if (!this.file) return ''
@@ -51,16 +47,13 @@ export class ReactiveFileComponent implements OnInit, ControlValueAccessor {
       const [ file ] = event.target.files
 
       if (file.size > this.maxFileSize) {
-        this.notifier.error(this.i18n('This file is too large.'))
+        this.notifier.error($localize`This file is too large.`)
         return
       }
 
       const extension = '.' + file.name.split('.').pop()
       if (this.extensions.includes(extension) === false) {
-        const message = this.i18n(
-          'PeerTube cannot handle this kind of file. Accepted extensions are {{extensions}}.',
-          { extensions: this.allowedExtensionsMessage }
-        )
+        const message = $localize`PeerTube cannot handle this kind of file. Accepted extensions are ${this.allowedExtensionsMessage}}.`
         this.notifier.error(message)
 
         return
diff --git a/client/src/app/shared/shared-forms/select/select-checkbox.component.ts b/client/src/app/shared/shared-forms/select/select-checkbox.component.ts
index fd683ae5d..eb0c49034 100644
--- a/client/src/app/shared/shared-forms/select/select-checkbox.component.ts
+++ b/client/src/app/shared/shared-forms/select/select-checkbox.component.ts
@@ -1,7 +1,6 @@
-import { Component, Input, forwardRef, OnInit } from '@angular/core'
-import { NG_VALUE_ACCESSOR, ControlValueAccessor } from '@angular/forms'
+import { Component, forwardRef, Input, OnInit } from '@angular/core'
+import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
 import { SelectOptionsItem } from './select-options.component'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 export type ItemSelectCheckboxValue = { id?: string | number, group?: string } | string
 
@@ -25,12 +24,8 @@ export class SelectCheckboxComponent implements OnInit, ControlValueAccessor {
   @Input() maxSelectedItems: number
   @Input() placeholder: string
 
-  constructor (
-    private i18n: I18n
-  ) {}
-
   ngOnInit () {
-    if (!this.placeholder) this.placeholder = this.i18n('Add a new option')
+    if (!this.placeholder) this.placeholder = $localize`Add a new option`
   }
 
   propagateChange = (_: any) => { /* empty */ }
diff --git a/client/src/app/shared/shared-instance/instance-features-table.component.ts b/client/src/app/shared/shared-instance/instance-features-table.component.ts
index 8fd15ebad..76b595c20 100644
--- a/client/src/app/shared/shared-instance/instance-features-table.component.ts
+++ b/client/src/app/shared/shared-instance/instance-features-table.component.ts
@@ -1,6 +1,5 @@
 import { Component, OnInit } from '@angular/core'
 import { ServerService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig } from '@shared/models'
 
 @Component({
@@ -12,11 +11,7 @@ export class InstanceFeaturesTableComponent implements OnInit {
   quotaHelpIndication = ''
   serverConfig: ServerConfig
 
-  constructor (
-    private i18n: I18n,
-    private serverService: ServerService
-  ) {
-  }
+  constructor (private serverService: ServerService) { }
 
   get initialUserVideoQuota () {
     return this.serverConfig.user.videoQuota
@@ -38,9 +33,9 @@ export class InstanceFeaturesTableComponent implements OnInit {
   buildNSFWLabel () {
     const policy = this.serverConfig.instance.defaultNSFWPolicy
 
-    if (policy === 'do_not_list') return this.i18n('Hidden')
-    if (policy === 'blur') return this.i18n('Blurred with confirmation request')
-    if (policy === 'display') return this.i18n('Displayed')
+    if (policy === 'do_not_list') return $localize`Hidden`
+    if (policy === 'blur') return $localize`Blurred with confirmation request`
+    if (policy === 'display') return $localize`Displayed`
   }
 
   getServerVersionAndCommit () {
@@ -55,7 +50,9 @@ export class InstanceFeaturesTableComponent implements OnInit {
 
     const minutes = Math.floor(seconds % 3600 / 60)
 
-    return this.i18n('~ {{minutes}} {minutes, plural, =1 {minute} other {minutes}}', { minutes })
+    if (minutes === 1) return $localize`~ 1 minute`
+
+    return $localize`~ ${minutes} minutes`
   }
 
   private buildQuotaHelpIndication () {
@@ -71,9 +68,9 @@ export class InstanceFeaturesTableComponent implements OnInit {
     const normalSeconds = initialUserVideoQuotaBit / (1.5 * 1000 * 1000)
 
     const lines = [
-      this.i18n('{{seconds}} of full HD videos', { seconds: this.getApproximateTime(fullHdSeconds) }),
-      this.i18n('{{seconds}} of HD videos', { seconds: this.getApproximateTime(hdSeconds) }),
-      this.i18n('{{seconds}} of average quality videos', { seconds: this.getApproximateTime(normalSeconds) })
+      $localize`${this.getApproximateTime(fullHdSeconds)} of full HD videos`,
+      $localize`${this.getApproximateTime(hdSeconds)} of HD videos`,
+      $localize`${this.getApproximateTime(normalSeconds)} of average quality videos`
     ]
 
     this.quotaHelpIndication = lines.join('<br />')
diff --git a/client/src/app/shared/shared-main/account/actor-avatar-info.component.ts b/client/src/app/shared/shared-main/account/actor-avatar-info.component.ts
index 1389218cc..3a86e5b21 100644
--- a/client/src/app/shared/shared-main/account/actor-avatar-info.component.ts
+++ b/client/src/app/shared/shared-main/account/actor-avatar-info.component.ts
@@ -1,7 +1,6 @@
 import { Component, ElementRef, EventEmitter, Input, OnInit, Output, ViewChild } from '@angular/core'
 import { Notifier, ServerService } from '@app/core'
 import { Account, BytesPipe, VideoChannel } from '@app/shared/shared-main'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig } from '@shared/models'
 
 @Component({
@@ -23,11 +22,10 @@ export class ActorAvatarInfoComponent implements OnInit {
 
   constructor (
     private serverService: ServerService,
-    private notifier: Notifier,
-    private i18n: I18n
+    private notifier: Notifier
   ) {
     this.bytesPipe = new BytesPipe()
-    this.maxSizeText = this.i18n('max size')
+    this.maxSizeText = $localize`max size`
   }
 
   ngOnInit (): void {
diff --git a/client/src/app/shared/shared-main/account/avatar.component.ts b/client/src/app/shared/shared-main/account/avatar.component.ts
index 73c145ef9..2967828a0 100644
--- a/client/src/app/shared/shared-main/account/avatar.component.ts
+++ b/client/src/app/shared/shared-main/account/avatar.component.ts
@@ -1,6 +1,5 @@
 import { Component, Input, OnInit } from '@angular/core'
 import { Video } from '../video/video.model'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'avatar-channel',
@@ -15,19 +14,9 @@ export class AvatarComponent implements OnInit {
   channelLinkTitle = ''
   accountLinkTitle = ''
 
-  constructor (
-    private i18n: I18n
-  ) {}
-
   ngOnInit () {
-    this.channelLinkTitle = this.i18n(
-      '{{name}} (channel page)',
-      { name: this.video.channel.name, handle: this.video.byVideoChannel }
-    )
-    this.accountLinkTitle = this.i18n(
-      '{{name}} (account page)',
-      { name: this.video.account.name, handle: this.video.byAccount }
-    )
+    this.channelLinkTitle = $localize`${this.video.account.name} (channel page)`
+    this.accountLinkTitle = $localize`${this.video.byAccount} (account page)`
   }
 
   isChannelAvatarNull () {
diff --git a/client/src/app/shared/shared-main/angular/from-now.pipe.ts b/client/src/app/shared/shared-main/angular/from-now.pipe.ts
index 9851468ee..5d85590bb 100644
--- a/client/src/app/shared/shared-main/angular/from-now.pipe.ts
+++ b/client/src/app/shared/shared-main/angular/from-now.pipe.ts
@@ -1,39 +1,36 @@
 import { Pipe, PipeTransform } from '@angular/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 // Thanks: https://stackoverflow.com/questions/3177836/how-to-format-time-since-xxx-e-g-4-minutes-ago-similar-to-stack-exchange-site
 @Pipe({ name: 'myFromNow' })
 export class FromNowPipe implements PipeTransform {
 
-  constructor (private i18n: I18n) { }
-
   transform (arg: number | Date | string) {
     const argDate = new Date(arg)
     const seconds = Math.floor((Date.now() - argDate.getTime()) / 1000)
 
     let interval = Math.floor(seconds / 31536000)
-    if (interval > 1) return this.i18n('{{interval}} years ago', { interval })
-    if (interval === 1) return this.i18n('{{interval}} year ago', { interval })
+    if (interval > 1) return $localize`${interval} years ago`
+    if (interval === 1) return $localize`${interval} year ago`
 
     interval = Math.floor(seconds / 2592000)
-    if (interval > 1) return this.i18n('{{interval}} months ago', { interval })
-    if (interval === 1) return this.i18n('{{interval}} month ago', { interval })
+    if (interval > 1) return $localize`${interval} months ago`
+    if (interval === 1) return $localize`${interval} month ago`
 
     interval = Math.floor(seconds / 604800)
-    if (interval > 1) return this.i18n('{{interval}} weeks ago', { interval })
-    if (interval === 1) return this.i18n('{{interval}} week ago', { interval })
+    if (interval > 1) return $localize`${interval} weeks ago`
+    if (interval === 1) return $localize`${interval} week ago`
 
     interval = Math.floor(seconds / 86400)
-    if (interval > 1) return this.i18n('{{interval}} days ago', { interval })
-    if (interval === 1) return this.i18n('{{interval}} day ago', { interval })
+    if (interval > 1) return $localize`${interval} days ago`
+    if (interval === 1) return $localize`${interval} day ago`
 
     interval = Math.floor(seconds / 3600)
-    if (interval > 1) return this.i18n('{{interval}} hours ago', { interval })
-    if (interval === 1) return this.i18n('{{interval}} hour ago', { interval })
+    if (interval > 1) return $localize`${interval} hours ago`
+    if (interval === 1) return $localize`${interval} hour ago`
 
     interval = Math.floor(seconds / 60)
-    if (interval >= 1) return this.i18n('{{interval}} min ago', { interval })
+    if (interval >= 1) return $localize`${interval} min ago`
 
-    return this.i18n('just now')
+    return $localize`just now`
   }
 }
diff --git a/client/src/app/shared/shared-main/buttons/delete-button.component.ts b/client/src/app/shared/shared-main/buttons/delete-button.component.ts
index aced0f881..18995422a 100644
--- a/client/src/app/shared/shared-main/buttons/delete-button.component.ts
+++ b/client/src/app/shared/shared-main/buttons/delete-button.component.ts
@@ -1,5 +1,4 @@
 import { Component, Input, OnInit } from '@angular/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-delete-button',
@@ -11,17 +10,15 @@ export class DeleteButtonComponent implements OnInit {
   @Input() label: string
   @Input() title: string
 
-  constructor (private i18n: I18n) { }
-
   ngOnInit () {
     // <my-delete-button /> No label
     if (this.label === undefined && !this.title) {
-      this.title = this.i18n('Delete')
+      this.title = $localize`Delete`
     }
 
     // <my-delete-button label /> Use default label
     if (this.label === '') {
-      this.label = this.i18n('Delete')
+      this.label = $localize`Delete`
 
       if (!this.title) {
         this.title = this.label
diff --git a/client/src/app/shared/shared-main/buttons/edit-button.component.ts b/client/src/app/shared/shared-main/buttons/edit-button.component.ts
index d8ae39b84..4b76551ca 100644
--- a/client/src/app/shared/shared-main/buttons/edit-button.component.ts
+++ b/client/src/app/shared/shared-main/buttons/edit-button.component.ts
@@ -1,5 +1,4 @@
 import { Component, Input, OnInit } from '@angular/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-edit-button',
@@ -12,17 +11,15 @@ export class EditButtonComponent implements OnInit {
   @Input() title: string
   @Input() routerLink: string[] | string = []
 
-  constructor (private i18n: I18n) { }
-
   ngOnInit () {
     // <my-edit-button /> No label
     if (this.label === undefined && !this.title) {
-      this.title = this.i18n('Update')
+      this.title = $localize`Update`
     }
 
     // <my-edit-button label /> Use default label
     if (this.label === '') {
-      this.label = this.i18n('Update')
+      this.label = $localize`Update`
 
       if (!this.title) {
         this.title = this.label
diff --git a/client/src/app/shared/shared-main/misc/help.component.ts b/client/src/app/shared/shared-main/misc/help.component.ts
index 0825b96de..ebc965a88 100644
--- a/client/src/app/shared/shared-main/misc/help.component.ts
+++ b/client/src/app/shared/shared-main/misc/help.component.ts
@@ -1,6 +1,5 @@
 import { AfterContentInit, Component, ContentChildren, Input, OnChanges, OnInit, QueryList, TemplateRef } from '@angular/core'
 import { MarkdownService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { PeerTubeTemplateDirective } from '../angular'
 
 @Component({
@@ -22,8 +21,6 @@ export class HelpComponent implements OnInit, OnChanges, AfterContentInit {
   customHtmlTemplate: TemplateRef<any>
   postHtmlTemplate: TemplateRef<any>
 
-  constructor (private i18n: I18n) { }
-
   ngOnInit () {
     this.init()
   }
@@ -71,17 +68,17 @@ export class HelpComponent implements OnInit, OnChanges, AfterContentInit {
 
   private formatMarkdownSupport (rules: string[]) {
     // tslint:disable:max-line-length
-    return this.i18n('<a href="https://en.wikipedia.org/wiki/Markdown#Example" target="_blank" rel="noopener noreferrer">Markdown</a> compatible that supports:') +
+    return $localize`<a href="https://en.wikipedia.org/wiki/Markdown#Example" target="_blank" rel="noopener noreferrer">Markdown</a> compatible that supports:` +
       this.createMarkdownList(rules)
   }
 
   private createMarkdownList (rules: string[]) {
     const rulesToText = {
-      'emphasis': this.i18n('Emphasis'),
-      'link': this.i18n('Links'),
-      'newline': this.i18n('New lines'),
-      'list': this.i18n('Lists'),
-      'image': this.i18n('Images')
+      'emphasis': $localize`Emphasis`,
+      'link': $localize`Links`,
+      'newline': $localize`New lines`,
+      'list': $localize`Lists`,
+      'image': $localize`Images`
     }
 
     const bullets = rules.map(r => rulesToText[r])
diff --git a/client/src/app/shared/shared-main/shared-main.module.ts b/client/src/app/shared/shared-main/shared-main.module.ts
index 6186db4d6..7f4676dd1 100644
--- a/client/src/app/shared/shared-main/shared-main.module.ts
+++ b/client/src/app/shared/shared-main/shared-main.module.ts
@@ -13,7 +13,6 @@ import {
   NgbPopoverModule,
   NgbTooltipModule
 } from '@ng-bootstrap/ng-bootstrap'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { SharedGlobalIconModule } from '../shared-icons'
 import { AccountService, ActorAvatarInfoComponent, AvatarComponent } from './account'
 import { FromNowPipe, InfiniteScrollerDirective, NumberFormatterPipe, PeerTubeTemplateDirective, BytesPipe } from './angular'
@@ -129,8 +128,6 @@ import { VideoChannelService } from './video-channel'
   ],
 
   providers: [
-    I18n,
-
     DatePipe,
 
     FromNowPipe,
diff --git a/client/src/app/shared/shared-main/users/user-quota.component.ts b/client/src/app/shared/shared-main/users/user-quota.component.ts
index 6830ad8fe..b38619186 100644
--- a/client/src/app/shared/shared-main/users/user-quota.component.ts
+++ b/client/src/app/shared/shared-main/users/user-quota.component.ts
@@ -1,7 +1,6 @@
 import { Subject } from 'rxjs'
 import { Component, Input, OnInit } from '@angular/core'
 import { User, UserService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { BytesPipe } from '../angular'
 
 @Component({
@@ -22,10 +21,7 @@ export class UserQuotaComponent implements OnInit {
   userVideoQuotaUsedDaily = 0
   userVideoQuotaDailyPercentage = 15
 
-  constructor (
-    private userService: UserService,
-    private i18n: I18n
-  ) { }
+  constructor (private userService: UserService) { }
 
   ngOnInit () {
     this.userInformationLoaded.subscribe(
@@ -33,13 +29,13 @@ export class UserQuotaComponent implements OnInit {
         if (this.user.videoQuota !== -1) {
           this.userVideoQuota = new BytesPipe().transform(this.user.videoQuota, 0).toString()
         } else {
-          this.userVideoQuota = this.i18n('Unlimited')
+          this.userVideoQuota = $localize`Unlimited`
         }
 
         if (this.user.videoQuotaDaily !== -1) {
           this.userVideoQuotaDaily = new BytesPipe().transform(this.user.videoQuotaDaily, 0).toString()
         } else {
-          this.userVideoQuotaDaily = this.i18n('Unlimited')
+          this.userVideoQuotaDaily = $localize`Unlimited`
         }
       }
     )
diff --git a/client/src/app/shared/shared-main/video/video.service.ts b/client/src/app/shared/shared-main/video/video.service.ts
index 978f775bf..b01e919aa 100644
--- a/client/src/app/shared/shared-main/video/video.service.ts
+++ b/client/src/app/shared/shared-main/video/video.service.ts
@@ -4,7 +4,6 @@ import { HttpClient, HttpParams, HttpRequest } from '@angular/common/http'
 import { Injectable } from '@angular/core'
 import { ComponentPaginationLight, RestExtractor, RestService, ServerService, UserService } from '@app/core'
 import { objectToFormData } from '@app/helpers'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import {
   FeedFormat,
   NSFWPolicyType,
@@ -15,11 +14,11 @@ import {
   Video as VideoServerModel,
   VideoConstant,
   VideoDetails as VideoDetailsServerModel,
+  VideoFileMetadata,
   VideoFilter,
   VideoPrivacy,
   VideoSortField,
-  VideoUpdate,
-  VideoFileMetadata
+  VideoUpdate
 } from '@shared/models'
 import { environment } from '../../../../environments/environment'
 import { Account, AccountService } from '../account'
@@ -48,8 +47,7 @@ export class VideoService implements VideosProvider {
     private authHttp: HttpClient,
     private restExtractor: RestExtractor,
     private restService: RestService,
-    private serverService: ServerService,
-    private i18n: I18n
+    private serverService: ServerService
   ) {}
 
   getVideoViewUrl (uuid: string) {
@@ -339,19 +337,19 @@ export class VideoService implements VideosProvider {
     const base = [
       {
         id: VideoPrivacy.PRIVATE,
-        description: this.i18n('Only I can see this video')
+        description: $localize`Only I can see this video`
       },
       {
         id: VideoPrivacy.UNLISTED,
-        description: this.i18n('Only shareable via a private link')
+        description: $localize`Only shareable via a private link`
       },
       {
         id: VideoPrivacy.PUBLIC,
-        description: this.i18n('Anyone can see this video')
+        description: $localize`Anyone can see this video`
       },
       {
         id: VideoPrivacy.INTERNAL,
-        description: this.i18n('Only users of this instance can see this video')
+        description: $localize`Only users of this instance can see this video`
       }
     ]
 
diff --git a/client/src/app/shared/shared-moderation/abuse.service.ts b/client/src/app/shared/shared-moderation/abuse.service.ts
index 06b236d1e..bf98d4b36 100644
--- a/client/src/app/shared/shared-moderation/abuse.service.ts
+++ b/client/src/app/shared/shared-moderation/abuse.service.ts
@@ -5,7 +5,6 @@ import { catchError, map } from 'rxjs/operators'
 import { HttpClient, HttpParams } from '@angular/common/http'
 import { Injectable } from '@angular/core'
 import { RestExtractor, RestPagination, RestService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import {
   AbuseCreate,
   AbuseFilter,
@@ -25,7 +24,6 @@ export class AbuseService {
   private static BASE_MY_ABUSE_URL = environment.apiUrl + '/api/v1/users/me/abuses'
 
   constructor (
-    private i18n: I18n,
     private authHttp: HttpClient,
     private restService: RestService,
     private restExtractor: RestExtractor
@@ -138,33 +136,33 @@ export class AbuseService {
     let reasons: { id: AbusePredefinedReasonsString, label: string, description?: string, help?: string }[] = [
       {
         id: 'violentOrRepulsive',
-        label: this.i18n('Violent or repulsive'),
-        help: this.i18n('Contains offensive, violent, or coarse language or iconography.')
+        label: $localize`Violent or repulsive`,
+        help: $localize`Contains offensive, violent, or coarse language or iconography.`
       },
       {
         id: 'hatefulOrAbusive',
-        label: this.i18n('Hateful or abusive'),
-        help: this.i18n('Contains abusive, racist or sexist language or iconography.')
+        label: $localize`Hateful or abusive`,
+        help: $localize`Contains abusive, racist or sexist language or iconography.`
       },
       {
         id: 'spamOrMisleading',
-        label: this.i18n('Spam, ad or false news'),
-        help: this.i18n('Contains marketing, spam, purposefully deceitful news, or otherwise misleading thumbnail/text/tags. Please provide reputable sources to report hoaxes.')
+        label: $localize`Spam, ad or false news`,
+        help: $localize`Contains marketing, spam, purposefully deceitful news, or otherwise misleading thumbnail/text/tags. Please provide reputable sources to report hoaxes.`
       },
       {
         id: 'privacy',
-        label: this.i18n('Privacy breach or doxxing'),
-        help: this.i18n('Contains personal information that could be used to track, identify, contact or impersonate someone (e.g. name, address, phone number, email, or credit card details).')
+        label: $localize`Privacy breach or doxxing`,
+        help: $localize`Contains personal information that could be used to track, identify, contact or impersonate someone (e.g. name, address, phone number, email, or credit card details).`
       },
       {
         id: 'rights',
-        label: this.i18n('Copyright'),
-        help: this.i18n('Infringes your copyright wrt. the regional laws with which the server must comply.')
+        label: $localize`Copyright`,
+        help: $localize`Infringes your copyright wrt. the regional laws with which the server must comply.`
       },
       {
         id: 'serverRules',
-        label: this.i18n('Breaks server rules'),
-        description: this.i18n('Anything not included in the above that breaks the terms of service, code of conduct, or general rules in place on the server.')
+        label: $localize`Breaks server rules`,
+        description: $localize`Anything not included in the above that breaks the terms of service, code of conduct, or general rules in place on the server.`
       }
     ]
 
@@ -172,13 +170,13 @@ export class AbuseService {
       reasons = reasons.concat([
         {
           id: 'thumbnails',
-          label: this.i18n('Thumbnails'),
-          help: this.i18n('The above can only be seen in thumbnails.')
+          label: $localize`Thumbnails`,
+          help: $localize`The above can only be seen in thumbnails.`
         },
         {
           id: 'captions',
-          label: this.i18n('Captions'),
-          help: this.i18n('The above can only be seen in captions (please describe which).')
+          label: $localize`Captions`,
+          help: $localize`The above can only be seen in captions (please describe which).`
         }
       ])
     }
diff --git a/client/src/app/shared/shared-moderation/account-blocklist.component.ts b/client/src/app/shared/shared-moderation/account-blocklist.component.ts
index a5a3c27cd..68928a2c2 100644
--- a/client/src/app/shared/shared-moderation/account-blocklist.component.ts
+++ b/client/src/app/shared/shared-moderation/account-blocklist.component.ts
@@ -1,8 +1,7 @@
 import { SortMeta } from 'primeng/api'
-import { OnInit, Directive } from '@angular/core'
+import { Directive, OnInit } from '@angular/core'
 import { Notifier, RestPagination, RestTable } from '@app/core'
 import { Actor } from '@app/shared/shared-main'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { AccountBlock } from './account-block.model'
 import { BlocklistComponentType, BlocklistService } from './blocklist.service'
 
@@ -19,8 +18,7 @@ export class GenericAccountBlocklistComponent extends RestTable implements OnIni
 
   constructor (
     private notifier: Notifier,
-    private blocklistService: BlocklistService,
-    private i18n: I18n
+    private blocklistService: BlocklistService
   ) {
     super()
   }
@@ -46,8 +44,8 @@ export class GenericAccountBlocklistComponent extends RestTable implements OnIni
       () => {
         this.notifier.success(
           this.mode === BlocklistComponentType.Account
-            ? this.i18n('Account {{nameWithHost}} unmuted.', { nameWithHost: blockedAccount.nameWithHost })
-            : this.i18n('Account {{nameWithHost}} unmuted by your instance.', { nameWithHost: blockedAccount.nameWithHost })
+            ? $localize`Account ${blockedAccount.nameWithHost} unmuted.`
+            : $localize`Account ${blockedAccount.nameWithHost} unmuted by your instance.`
         )
 
         this.loadData()
diff --git a/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts b/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
index fdd4a79a9..7193ccb1b 100644
--- a/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
+++ b/client/src/app/shared/shared-moderation/batch-domains-modal.component.ts
@@ -2,7 +2,6 @@ import { Component, EventEmitter, Input, OnInit, Output, ViewChild } from '@angu
 import { BatchDomainsValidatorsService, FormReactive, FormValidatorService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-batch-domains-modal',
@@ -20,14 +19,13 @@ export class BatchDomainsModalComponent extends FormReactive implements OnInit {
   constructor (
     protected formValidatorService: FormValidatorService,
     private modalService: NgbModal,
-    private batchDomainsValidatorsService: BatchDomainsValidatorsService,
-    private i18n: I18n
+    private batchDomainsValidatorsService: BatchDomainsValidatorsService
   ) {
     super()
   }
 
   ngOnInit () {
-    if (!this.action) this.action = this.i18n('Process domains')
+    if (!this.action) this.action = $localize`Process domains`
 
     this.buildForm({
       domains: this.batchDomainsValidatorsService.DOMAINS
diff --git a/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
index 08dbe9538..8ab2fe940 100644
--- a/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/account-report.component.ts
@@ -5,7 +5,6 @@ import { AbuseValidatorsService, FormReactive, FormValidatorService } from '@app
 import { Account } from '@app/shared/shared-main'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { abusePredefinedReasonsMap } from '@shared/core-utils/abuse'
 import { AbusePredefinedReasonsString } from '@shared/models'
 import { AbuseService } from '../abuse.service'
@@ -31,8 +30,7 @@ export class AccountReportComponent extends FormReactive implements OnInit {
     private modalService: NgbModal,
     private abuseValidatorsService: AbuseValidatorsService,
     private abuseService: AbuseService,
-    private notifier: Notifier,
-    private i18n: I18n
+    private notifier: Notifier
   ) {
     super()
   }
@@ -50,7 +48,7 @@ export class AccountReportComponent extends FormReactive implements OnInit {
   }
 
   ngOnInit () {
-    this.modalTitle = this.i18n('Report {{displayName}}', { displayName: this.account.displayName })
+    this.modalTitle = $localize`Report ${this.account.displayName}`
 
     this.buildForm({
       reason: this.abuseValidatorsService.ABUSE_REASON,
@@ -81,7 +79,7 @@ export class AccountReportComponent extends FormReactive implements OnInit {
       }
     }).subscribe(
       () => {
-        this.notifier.success(this.i18n('Account reported.'))
+        this.notifier.success($localize`Account reported.`)
         this.hide()
       },
 
diff --git a/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
index 2769874d9..d75f4d717 100644
--- a/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/comment-report.component.ts
@@ -5,7 +5,6 @@ import { AbuseValidatorsService, FormReactive, FormValidatorService } from '@app
 import { VideoComment } from '@app/shared/shared-video-comment'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { abusePredefinedReasonsMap } from '@shared/core-utils/abuse'
 import { AbusePredefinedReasonsString } from '@shared/models'
 import { AbuseService } from '../abuse.service'
@@ -31,8 +30,7 @@ export class CommentReportComponent extends FormReactive implements OnInit {
     private modalService: NgbModal,
     private abuseValidatorsService: AbuseValidatorsService,
     private abuseService: AbuseService,
-    private notifier: Notifier,
-    private i18n: I18n
+    private notifier: Notifier
   ) {
     super()
   }
@@ -50,7 +48,7 @@ export class CommentReportComponent extends FormReactive implements OnInit {
   }
 
   ngOnInit () {
-    this.modalTitle = this.i18n('Report comment')
+    this.modalTitle = $localize`Report comment`
 
     this.buildForm({
       reason: this.abuseValidatorsService.ABUSE_REASON,
@@ -81,7 +79,7 @@ export class CommentReportComponent extends FormReactive implements OnInit {
       }
     }).subscribe(
       () => {
-        this.notifier.success(this.i18n('Comment reported.'))
+        this.notifier.success($localize`Comment reported.`)
         this.hide()
       },
 
diff --git a/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts b/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
index 794dd54bb..edff6d325 100644
--- a/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
+++ b/client/src/app/shared/shared-moderation/report-modals/video-report.component.ts
@@ -1,12 +1,11 @@
 import { mapValues, pickBy } from 'lodash-es'
-import { buildVideoOrPlaylistEmbed, buildVideoLink } from 'src/assets/player/utils'
+import { buildVideoLink, buildVideoOrPlaylistEmbed } from 'src/assets/player/utils'
 import { Component, Input, OnInit, ViewChild } from '@angular/core'
 import { DomSanitizer, SafeHtml } from '@angular/platform-browser'
 import { Notifier } from '@app/core'
 import { AbuseValidatorsService, FormReactive, FormValidatorService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { abusePredefinedReasonsMap } from '@shared/core-utils/abuse'
 import { AbusePredefinedReasonsString } from '@shared/models'
 import { Video } from '../../shared-main'
@@ -34,8 +33,7 @@ export class VideoReportComponent extends FormReactive implements OnInit {
     private abuseValidatorsService: AbuseValidatorsService,
     private abuseService: AbuseService,
     private notifier: Notifier,
-    private sanitizer: DomSanitizer,
-    private i18n: I18n
+    private sanitizer: DomSanitizer
   ) {
     super()
   }
@@ -109,7 +107,7 @@ export class VideoReportComponent extends FormReactive implements OnInit {
       }
     }).subscribe(
       () => {
-        this.notifier.success(this.i18n('Video reported.'))
+        this.notifier.success($localize`Video reported.`)
         this.hide()
       },
 
diff --git a/client/src/app/shared/shared-moderation/server-blocklist.component.ts b/client/src/app/shared/shared-moderation/server-blocklist.component.ts
index 8f65cdb71..546fd53c3 100644
--- a/client/src/app/shared/shared-moderation/server-blocklist.component.ts
+++ b/client/src/app/shared/shared-moderation/server-blocklist.component.ts
@@ -2,7 +2,6 @@ import { SortMeta } from 'primeng/api'
 import { Directive, OnInit, ViewChild } from '@angular/core'
 import { Notifier, RestPagination, RestTable } from '@app/core'
 import { BatchDomainsModalComponent } from '@app/shared/shared-moderation/batch-domains-modal.component'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerBlock } from '@shared/models'
 import { BlocklistComponentType, BlocklistService } from './blocklist.service'
 
@@ -21,8 +20,7 @@ export class GenericServerBlocklistComponent extends RestTable implements OnInit
 
   constructor (
     protected notifier: Notifier,
-    protected blocklistService: BlocklistService,
-    protected i18n: I18n
+    protected blocklistService: BlocklistService
   ) {
     super()
   }
@@ -44,8 +42,8 @@ export class GenericServerBlocklistComponent extends RestTable implements OnInit
       () => {
         this.notifier.success(
           this.mode === BlocklistComponentType.Account
-            ? this.i18n('Instance {{host}} unmuted.', { host })
-            : this.i18n('Instance {{host}} unmuted by your instance.', { host })
+            ? $localize`Instance ${host} unmuted.`
+            : $localize`Instance ${host} unmuted by your instance.`
         )
 
         this.loadData()
@@ -67,8 +65,8 @@ export class GenericServerBlocklistComponent extends RestTable implements OnInit
         () => {
           this.notifier.success(
             this.mode === BlocklistComponentType.Account
-              ? this.i18n('Instance {{domain}} muted.', { domain })
-              : this.i18n('Instance {{domain}} muted by your instance.', { domain })
+              ? $localize`Instance ${domain} muted.`
+              : $localize`Instance ${domain} muted by your instance.`
           )
 
           this.loadData()
diff --git a/client/src/app/shared/shared-moderation/user-ban-modal.component.ts b/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
index 124e58669..f9a0381c5 100644
--- a/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
+++ b/client/src/app/shared/shared-moderation/user-ban-modal.component.ts
@@ -3,7 +3,6 @@ import { Notifier, UserService } from '@app/core'
 import { FormReactive, FormValidatorService, UserValidatorsService } from '@app/shared/shared-forms'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { User } from '@shared/models'
 
 @Component({
@@ -23,8 +22,7 @@ export class UserBanModalComponent extends FormReactive implements OnInit {
     private modalService: NgbModal,
     private notifier: Notifier,
     private userService: UserService,
-    private userValidatorsService: UserValidatorsService,
-    private i18n: I18n
+    private userValidatorsService: UserValidatorsService
   ) {
     super()
   }
@@ -52,8 +50,8 @@ export class UserBanModalComponent extends FormReactive implements OnInit {
       .subscribe(
         () => {
           const message = Array.isArray(this.usersToBan)
-            ? this.i18n('{{num}} users banned.', { num: this.usersToBan.length })
-            : this.i18n('User {{username}} banned.', { username: this.usersToBan.username })
+            ? $localize`${this.usersToBan.length} users banned.`
+            : $localize`User ${this.usersToBan.username} banned.`
 
           this.notifier.success(message)
 
diff --git a/client/src/app/shared/shared-moderation/user-moderation-dropdown.component.ts b/client/src/app/shared/shared-moderation/user-moderation-dropdown.component.ts
index 34fa7366c..44aefa853 100644
--- a/client/src/app/shared/shared-moderation/user-moderation-dropdown.component.ts
+++ b/client/src/app/shared/shared-moderation/user-moderation-dropdown.component.ts
@@ -1,7 +1,6 @@
 import { Component, EventEmitter, Input, OnChanges, OnInit, Output, ViewChild } from '@angular/core'
 import { AuthService, ConfirmService, Notifier, ServerService, UserService } from '@app/core'
 import { Account, DropdownAction } from '@app/shared/shared-main'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { BulkRemoveCommentsOfBody, ServerConfig, User, UserRight } from '@shared/models'
 import { BlocklistService } from './blocklist.service'
 import { BulkService } from './bulk.service'
@@ -37,8 +36,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     private serverService: ServerService,
     private userService: UserService,
     private blocklistService: BlocklistService,
-    private bulkService: BulkService,
-    private i18n: I18n
+    private bulkService: BulkService
   ) { }
 
   get requiresEmailVerification () {
@@ -57,7 +55,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
 
   openBanUserModal (user: User) {
     if (user.username === 'root') {
-      this.notifier.error(this.i18n('You cannot ban root.'))
+      this.notifier.error($localize`You cannot ban root.`)
       return
     }
 
@@ -69,15 +67,13 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
   }
 
   async unbanUser (user: User) {
-    const message = this.i18n('Do you really want to unban {{username}}?', { username: user.username })
-    const res = await this.confirmService.confirm(message, this.i18n('Unban'))
+    const res = await this.confirmService.confirm($localize`Do you really want to unban ${user.username}?`, $localize`Unban`)
     if (res === false) return
 
     this.userService.unbanUsers(user)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('User {{username}} unbanned.', { username: user.username }))
-
+            this.notifier.success($localize`User ${user.username} unbanned.`)
             this.userChanged.emit()
           },
 
@@ -87,17 +83,17 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
 
   async removeUser (user: User) {
     if (user.username === 'root') {
-      this.notifier.error(this.i18n('You cannot delete root.'))
+      this.notifier.error($localize`You cannot delete root.`)
       return
     }
 
-    const message = this.i18n('If you remove this user, you will not be able to create another with the same username!')
-    const res = await this.confirmService.confirm(message, this.i18n('Delete'))
+    const message = $localize`If you remove this user, you will not be able to create another with the same username!`
+    const res = await this.confirmService.confirm(message, $localize`Delete`)
     if (res === false) return
 
     this.userService.removeUser(user).subscribe(
       () => {
-        this.notifier.success(this.i18n('User {{username}} deleted.', { username: user.username }))
+        this.notifier.success($localize`User ${user.username} deleted.`)
         this.userDeleted.emit()
       },
 
@@ -108,8 +104,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
   setEmailAsVerified (user: User) {
     this.userService.updateUser(user.id, { emailVerified: true }).subscribe(
       () => {
-        this.notifier.success(this.i18n('User {{username}} email set as verified', { username: user.username }))
-
+        this.notifier.success($localize`User ${user.username} email set as verified`)
         this.userChanged.emit()
       },
 
@@ -121,7 +116,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.blockAccountByUser(account)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Account {{nameWithHost}} muted.', { nameWithHost: account.nameWithHost }))
+            this.notifier.success($localize`Account ${account.nameWithHost} muted.`)
 
             this.account.mutedByUser = true
             this.userChanged.emit()
@@ -135,7 +130,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.unblockAccountByUser(account)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Account {{nameWithHost}} unmuted.', { nameWithHost: account.nameWithHost }))
+            this.notifier.success($localize`Account ${account.nameWithHost} unmuted.`)
 
             this.account.mutedByUser = false
             this.userChanged.emit()
@@ -149,7 +144,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.blockServerByUser(host)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Instance {{host}} muted.', { host }))
+            this.notifier.success($localize`Instance ${host} muted.`)
 
             this.account.mutedServerByUser = true
             this.userChanged.emit()
@@ -163,7 +158,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.unblockServerByUser(host)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Instance {{host}} unmuted.', { host }))
+            this.notifier.success($localize`Instance ${host} unmuted.`)
 
             this.account.mutedServerByUser = false
             this.userChanged.emit()
@@ -177,7 +172,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.blockAccountByInstance(account)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Account {{nameWithHost}} muted by the instance.', { nameWithHost: account.nameWithHost }))
+            this.notifier.success($localize`Account ${account.nameWithHost} muted by the instance.`)
 
             this.account.mutedByInstance = true
             this.userChanged.emit()
@@ -191,7 +186,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.unblockAccountByInstance(account)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Account {{nameWithHost}} unmuted by the instance.', { nameWithHost: account.nameWithHost }))
+            this.notifier.success($localize`Account ${account.nameWithHost} unmuted by the instance.`)
 
             this.account.mutedByInstance = false
             this.userChanged.emit()
@@ -205,7 +200,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.blockServerByInstance(host)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Instance {{host}} muted by the instance.', { host }))
+            this.notifier.success($localize`Instance ${host} muted by the instance.`)
 
             this.account.mutedServerByInstance = true
             this.userChanged.emit()
@@ -219,7 +214,7 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
     this.blocklistService.unblockServerByInstance(host)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Instance {{host}} unmuted by the instance.', { host }))
+            this.notifier.success($localize`Instance ${host} unmuted by the instance.`)
 
             this.account.mutedServerByInstance = false
             this.userChanged.emit()
@@ -230,14 +225,14 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
   }
 
   async bulkRemoveCommentsOf (body: BulkRemoveCommentsOfBody) {
-    const message = this.i18n('Are you sure you want to remove all the comments of this account?')
-    const res = await this.confirmService.confirm(message, this.i18n('Delete account comments'))
+    const message = $localize`Are you sure you want to remove all the comments of this account?`
+    const res = await this.confirmService.confirm(message, $localize`Delete account comments`)
     if (res === false) return
 
     this.bulkService.removeCommentsOf(body)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Will remove comments of this account (may take several minutes).'))
+            this.notifier.success($localize`Will remove comments of this account (may take several minutes).`)
           },
 
           err => this.notifier.error(err.message)
@@ -265,29 +260,29 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
       if (this.user && authUser.hasRight(UserRight.MANAGE_USERS) && authUser.canManage(this.user)) {
         this.userActions.push([
           {
-            label: this.i18n('Edit user'),
-            description: this.i18n('Change quota, role, and more.'),
+            label: $localize`Edit user`,
+            description: $localize`Change quota, role, and more.`,
             linkBuilder: ({ user }) => this.getRouterUserEditLink(user)
           },
           {
-            label: this.i18n('Delete user'),
-            description: this.i18n('Videos will be deleted, comments will be tombstoned.'),
+            label: $localize`Delete user`,
+            description: $localize`Videos will be deleted, comments will be tombstoned.`,
             handler: ({ user }) => this.removeUser(user)
           },
           {
-            label: this.i18n('Ban'),
-            description: this.i18n('User won\'t be able to login anymore, but videos and comments will be kept as is.'),
+            label: $localize`Ban`,
+            description: $localize`User won't be able to login anymore, but videos and comments will be kept as is.`,
             handler: ({ user }) => this.openBanUserModal(user),
             isDisplayed: ({ user }) => !user.blocked
           },
           {
-            label: this.i18n('Unban user'),
-            description: this.i18n('Allow the user to login and create videos/comments again'),
+            label: $localize`Unban user`,
+            description: $localize`Allow the user to login and create videos/comments again`,
             handler: ({ user }) => this.unbanUser(user),
             isDisplayed: ({ user }) => user.blocked
           },
           {
-            label: this.i18n('Set Email as Verified'),
+            label: $localize`Set Email as Verified`,
             handler: ({ user }) => this.setEmailAsVerified(user),
             isDisplayed: ({ user }) => this.requiresEmailVerification && !user.blocked && user.emailVerified === false
           }
@@ -299,32 +294,32 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
         // User actions
         this.userActions.push([
           {
-            label: this.i18n('Mute this account'),
-            description: this.i18n('Hide any content from that user for you.'),
+            label: $localize`Mute this account`,
+            description: $localize`Hide any content from that user for you.`,
             isDisplayed: ({ account }) => account.mutedByUser === false,
             handler: ({ account }) => this.blockAccountByUser(account)
           },
           {
-            label: this.i18n('Unmute this account'),
-            description: this.i18n('Show back content from that user for you.'),
+            label: $localize`Unmute this account`,
+            description: $localize`Show back content from that user for you.`,
             isDisplayed: ({ account }) => account.mutedByUser === true,
             handler: ({ account }) => this.unblockAccountByUser(account)
           },
           {
-            label: this.i18n('Mute the instance'),
-            description: this.i18n('Hide any content from that instance for you.'),
+            label: $localize`Mute the instance`,
+            description: $localize`Hide any content from that instance for you.`,
             isDisplayed: ({ account }) => !account.userId && account.mutedServerByInstance === false,
             handler: ({ account }) => this.blockServerByUser(account.host)
           },
           {
-            label: this.i18n('Unmute the instance'),
-            description: this.i18n('Show back content from that instance for you.'),
+            label: $localize`Unmute the instance`,
+            description: $localize`Show back content from that instance for you.`,
             isDisplayed: ({ account }) => !account.userId && account.mutedServerByInstance === true,
             handler: ({ account }) => this.unblockServerByUser(account.host)
           },
           {
-            label: this.i18n('Remove comments from your videos'),
-            description: this.i18n('Remove comments of this account from your videos.'),
+            label: $localize`Remove comments from your videos`,
+            description: $localize`Remove comments of this account from your videos.`,
             handler: ({ account }) => this.bulkRemoveCommentsOf({ accountName: account.nameWithHost, scope: 'my-videos' })
           }
         ])
@@ -335,14 +330,14 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
         if (authUser.hasRight(UserRight.MANAGE_ACCOUNTS_BLOCKLIST)) {
           instanceActions = instanceActions.concat([
             {
-              label: this.i18n('Mute this account by your instance'),
-              description: this.i18n('Hide any content from that user for you, your instance and its users.'),
+              label: $localize`Mute this account by your instance`,
+              description: $localize`Hide any content from that user for you, your instance and its users.`,
               isDisplayed: ({ account }) => account.mutedByInstance === false,
               handler: ({ account }) => this.blockAccountByInstance(account)
             },
             {
-              label: this.i18n('Unmute this account by your instance'),
-              description: this.i18n('Show back content from that user for you, your instance and its users.'),
+              label: $localize`Unmute this account by your instance`,
+              description: $localize`Show back content from that user for you, your instance and its users.`,
               isDisplayed: ({ account }) => account.mutedByInstance === true,
               handler: ({ account }) => this.unblockAccountByInstance(account)
             }
@@ -353,14 +348,14 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
         if (authUser.hasRight(UserRight.MANAGE_SERVERS_BLOCKLIST)) {
           instanceActions = instanceActions.concat([
             {
-              label: this.i18n('Mute the instance by your instance'),
-              description: this.i18n('Hide any content from that instance for you, your instance and its users.'),
+              label: $localize`Mute the instance by your instance`,
+              description: $localize`Hide any content from that instance for you, your instance and its users.`,
               isDisplayed: ({ account }) => !account.userId && account.mutedServerByInstance === false,
               handler: ({ account }) => this.blockServerByInstance(account.host)
             },
             {
-              label: this.i18n('Unmute the instance by your instance'),
-              description: this.i18n('Show back content from that instance for you, your instance and its users.'),
+              label: $localize`Unmute the instance by your instance`,
+              description: $localize`Show back content from that instance for you, your instance and its users.`,
               isDisplayed: ({ account }) => !account.userId && account.mutedServerByInstance === true,
               handler: ({ account }) => this.unblockServerByInstance(account.host)
             }
@@ -370,8 +365,8 @@ export class UserModerationDropdownComponent implements OnInit, OnChanges {
         if (authUser.hasRight(UserRight.REMOVE_ANY_VIDEO_COMMENT)) {
           instanceActions = instanceActions.concat([
             {
-              label: this.i18n('Remove comments from your instance'),
-              description: this.i18n('Remove comments of this account from your instance.'),
+              label: $localize`Remove comments from your instance`,
+              description: $localize`Remove comments of this account from your instance.`,
               handler: ({ account }) => this.bulkRemoveCommentsOf({ accountName: account.nameWithHost, scope: 'instance' })
             }
           ])
diff --git a/client/src/app/shared/shared-moderation/video-block.component.ts b/client/src/app/shared/shared-moderation/video-block.component.ts
index 054651e71..2bef9efdd 100644
--- a/client/src/app/shared/shared-moderation/video-block.component.ts
+++ b/client/src/app/shared/shared-moderation/video-block.component.ts
@@ -4,7 +4,6 @@ import { FormReactive, FormValidatorService, VideoBlockValidatorsService } from
 import { Video } from '@app/shared/shared-main'
 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
 import { NgbModalRef } from '@ng-bootstrap/ng-bootstrap/modal/modal-ref'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { VideoBlockService } from './video-block.service'
 
 @Component({
@@ -28,8 +27,7 @@ export class VideoBlockComponent extends FormReactive implements OnInit {
     private modalService: NgbModal,
     private videoBlockValidatorsService: VideoBlockValidatorsService,
     private videoBlocklistService: VideoBlockService,
-    private notifier: Notifier,
-    private i18n: I18n
+    private notifier: Notifier
   ) {
     super()
   }
@@ -59,7 +57,7 @@ export class VideoBlockComponent extends FormReactive implements OnInit {
     this.videoBlocklistService.blockVideo(this.video.id, reason, unfederate)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Video blocked.'))
+            this.notifier.success($localize`Video blocked.`)
             this.hide()
 
             this.video.blacklisted = true
diff --git a/client/src/app/shared/shared-thumbnail/video-thumbnail.component.ts b/client/src/app/shared/shared-thumbnail/video-thumbnail.component.ts
index 812c7a508..b2a2cf240 100644
--- a/client/src/app/shared/shared-thumbnail/video-thumbnail.component.ts
+++ b/client/src/app/shared/shared-thumbnail/video-thumbnail.component.ts
@@ -1,6 +1,5 @@
 import { Component, EventEmitter, Input, Output } from '@angular/core'
 import { ScreenService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { Video } from '../shared-main'
 
 @Component({
@@ -25,12 +24,9 @@ export class VideoThumbnailComponent {
   addToWatchLaterText: string
   addedToWatchLaterText: string
 
-  constructor (
-    private screenService: ScreenService,
-    private i18n: I18n
-  ) {
-    this.addToWatchLaterText = this.i18n('Add to watch later')
-    this.addedToWatchLaterText = this.i18n('Remove from watch later')
+  constructor (private screenService: ScreenService) {
+    this.addToWatchLaterText = $localize`Add to watch later`
+    this.addedToWatchLaterText = $localize`Remove from watch later`
   }
 
   getImageUrl () {
diff --git a/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts b/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
index 875ffa3f1..80b88c129 100644
--- a/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
+++ b/client/src/app/shared/shared-user-settings/user-interface-settings.component.ts
@@ -2,7 +2,6 @@ import { Subject, Subscription } from 'rxjs'
 import { Component, Input, OnDestroy, OnInit } from '@angular/core'
 import { AuthService, Notifier, ServerService, UserService } from '@app/core'
 import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig, User, UserUpdateMe } from '@shared/models'
 
 @Component({
@@ -25,8 +24,7 @@ export class UserInterfaceSettingsComponent extends FormReactive implements OnIn
     private authService: AuthService,
     private notifier: Notifier,
     private userService: UserService,
-    private serverService: ServerService,
-    private i18n: I18n
+    private serverService: ServerService
   ) {
     super()
   }
@@ -73,14 +71,14 @@ export class UserInterfaceSettingsComponent extends FormReactive implements OnIn
         () => {
           this.authService.refreshUserInformation()
 
-          if (this.notifyOnUpdate) this.notifier.success(this.i18n('Interface settings updated.'))
+          if (this.notifyOnUpdate) this.notifier.success($localize`Interface settings updated.`)
         },
 
         err => this.notifier.error(err.message)
       )
     } else {
       this.userService.updateMyAnonymousProfile(details)
-      if (this.notifyOnUpdate) this.notifier.success(this.i18n('Interface settings updated.'))
+      if (this.notifyOnUpdate) this.notifier.success($localize`Interface settings updated.`)
     }
   }
 }
diff --git a/client/src/app/shared/shared-user-settings/user-video-settings.component.ts b/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
index eb340e24d..ab77f6f9c 100644
--- a/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
+++ b/client/src/app/shared/shared-user-settings/user-video-settings.component.ts
@@ -4,7 +4,6 @@ import { first } from 'rxjs/operators'
 import { Component, Input, OnDestroy, OnInit } from '@angular/core'
 import { AuthService, Notifier, ServerService, User, UserService } from '@app/core'
 import { FormReactive, FormValidatorService, ItemSelectCheckboxValue, SelectOptionsItem } from '@app/shared/shared-forms'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { UserUpdateMe } from '@shared/models'
 import { NSFWPolicyType } from '@shared/models/videos/nsfw-policy.type'
 
@@ -30,14 +29,13 @@ export class UserVideoSettingsComponent extends FormReactive implements OnInit,
     private authService: AuthService,
     private notifier: Notifier,
     private userService: UserService,
-    private serverService: ServerService,
-    private i18n: I18n
+    private serverService: ServerService
   ) {
     super()
   }
 
   ngOnInit () {
-    this.allLanguagesGroup = this.i18n('All languages')
+    this.allLanguagesGroup = $localize`All languages`
 
     let oldForm: any
 
@@ -56,7 +54,7 @@ export class UserVideoSettingsComponent extends FormReactive implements OnInit,
     ]).subscribe(([ languages, config ]) => {
       const group = this.allLanguagesGroup
 
-      this.languageItems = [ { label: this.i18n('Unknown language'), id: '_unknown', group } ]
+      this.languageItems = [ { label: $localize`Unknown language`, id: '_unknown', group } ]
       this.languageItems = this.languageItems
                                .concat(languages.map(l => ({ label: l.label, id: l.id, group })))
 
@@ -101,12 +99,12 @@ export class UserVideoSettingsComponent extends FormReactive implements OnInit,
 
     if (Array.isArray(videoLanguages)) {
       if (videoLanguages.length > 20) {
-        this.notifier.error(this.i18n('Too many languages are enabled. Please enable them all or stay below 20 enabled languages.'))
+        this.notifier.error($localize`Too many languages are enabled. Please enable them all or stay below 20 enabled languages.`)
         return
       }
 
       if (videoLanguages.length === 0) {
-        this.notifier.error(this.i18n('You need to enable at least 1 video language.'))
+        this.notifier.error($localize`You need to enable at least 1 video language.`)
         return
       }
 
@@ -133,22 +131,14 @@ export class UserVideoSettingsComponent extends FormReactive implements OnInit,
         () => {
           this.authService.refreshUserInformation()
 
-          if (this.notifyOnUpdate) this.notifier.success(this.i18n('Video settings updated.'))
+          if (this.notifyOnUpdate) this.notifier.success($localize`Video settings updated.`)
         },
 
         err => this.notifier.error(err.message)
       )
     } else {
       this.userService.updateMyAnonymousProfile(details)
-      if (this.notifyOnUpdate) this.notifier.success(this.i18n('Display/Video settings updated.'))
+      if (this.notifyOnUpdate) this.notifier.success($localize`Display/Video settings updated.`)
     }
   }
-
-  getDefaultVideoLanguageLabel () {
-    return this.i18n('No language')
-  }
-
-  getSelectedVideoLanguageLabel () {
-    return this.i18n('{{\'{0} languages selected')
-  }
 }
diff --git a/client/src/app/shared/shared-user-subscription/subscribe-button.component.ts b/client/src/app/shared/shared-user-subscription/subscribe-button.component.ts
index 72fa3f4fd..b918fda06 100644
--- a/client/src/app/shared/shared-user-subscription/subscribe-button.component.ts
+++ b/client/src/app/shared/shared-user-subscription/subscribe-button.component.ts
@@ -3,7 +3,6 @@ import { Component, Input, OnChanges, OnInit } from '@angular/core'
 import { Router } from '@angular/router'
 import { AuthService, Notifier } from '@app/core'
 import { Account, VideoChannel, VideoService } from '@app/shared/shared-main'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { FeedFormat } from '@shared/models'
 import { UserSubscriptionService } from './user-subscription.service'
 
@@ -31,7 +30,6 @@ export class SubscribeButtonComponent implements OnInit, OnChanges {
     private router: Router,
     private notifier: Notifier,
     private userSubscriptionService: UserSubscriptionService,
-    private i18n: I18n,
     private videoService: VideoService
   ) { }
 
@@ -108,20 +106,14 @@ export class SubscribeButtonComponent implements OnInit, OnChanges {
         () => {
           this.notifier.success(
             this.account
-              ? this.i18n(
-                  'Subscribed to all current channels of {{nameWithHost}}. You will be notified of all their new videos.',
-                  { nameWithHost: this.account.displayName }
-                )
-              : this.i18n(
-                  'Subscribed to {{nameWithHost}}. You will be notified of all their new videos.',
-                  { nameWithHost: this.videoChannels[0].displayName }
-                )
-            ,
-            this.i18n('Subscribed')
+              ? $localize`Subscribed to all current channels of ${this.account.displayName}. You will be notified of all their new videos.`
+              : $localize`Subscribed to ${this.videoChannels[0].displayName}. You will be notified of all their new videos.`,
+
+            $localize`Subscribed`
           )
         },
 
-          err => this.notifier.error(err.message)
+        err => this.notifier.error(err.message)
       )
   }
 
@@ -144,10 +136,10 @@ export class SubscribeButtonComponent implements OnInit, OnChanges {
         complete: () => {
           this.notifier.success(
             this.account
-              ? this.i18n('Unsubscribed from all channels of {{nameWithHost}}', { nameWithHost: this.account.nameWithHost })
-              : this.i18n('Unsubscribed from {{nameWithHost}}', { nameWithHost: this.videoChannels[ 0 ].nameWithHost })
-            ,
-            this.i18n('Unsubscribed')
+              ? $localize`Unsubscribed from all channels of ${this.account.nameWithHost}`
+              : $localize`Unsubscribed from ${this.videoChannels[ 0 ].nameWithHost}`,
+
+            $localize`Unsubscribed`
           )
         },
 
diff --git a/client/src/app/shared/shared-video-miniature/abstract-video-list.ts b/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
index e18002b74..1b5b8a64b 100644
--- a/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
+++ b/client/src/app/shared/shared-video-miniature/abstract-video-list.ts
@@ -14,7 +14,6 @@ import {
 } from '@app/core'
 import { DisableForReuseHook } from '@app/core/routing/disable-for-reuse-hook'
 import { GlobalIconName } from '@app/shared/shared-icons'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { isLastMonth, isLastWeek, isToday, isYesterday } from '@shared/core-utils/miscs/date'
 import { ServerConfig, VideoSortField } from '@shared/models'
 import { NSFWPolicyType } from '@shared/models/videos/nsfw-policy.type'
@@ -89,7 +88,6 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableFor
   protected abstract screenService: ScreenService
   protected abstract storageService: LocalStorageService
   protected abstract router: Router
-  protected abstract i18n: I18n
   abstract titlePage: string
 
   private resizeSubscription: Subscription
@@ -111,11 +109,11 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableFor
 
     this.groupedDateLabels = {
       [GroupDate.UNKNOWN]: null,
-      [GroupDate.TODAY]: this.i18n('Today'),
-      [GroupDate.YESTERDAY]: this.i18n('Yesterday'),
-      [GroupDate.LAST_WEEK]: this.i18n('Last week'),
-      [GroupDate.LAST_MONTH]: this.i18n('Last month'),
-      [GroupDate.OLDER]: this.i18n('Older')
+      [GroupDate.TODAY]: $localize`Today`,
+      [GroupDate.YESTERDAY]: $localize`Yesterday`,
+      [GroupDate.LAST_WEEK]: $localize`Last week`,
+      [GroupDate.LAST_MONTH]: $localize`Last month`,
+      [GroupDate.OLDER]: $localize`Older`
     }
 
     // Subscribe to route changes
@@ -192,7 +190,7 @@ export abstract class AbstractVideoList implements OnInit, OnDestroy, DisableFor
       },
 
       error => {
-        const message = this.i18n('Cannot load more videos. Try again later.')
+        const message = $localize`Cannot load more videos. Try again later.`
 
         console.error(message, { error })
         this.notifier.error(message)
diff --git a/client/src/app/shared/shared-video-miniature/video-actions-dropdown.component.ts b/client/src/app/shared/shared-video-miniature/video-actions-dropdown.component.ts
index 3d1fc8690..39358e08b 100644
--- a/client/src/app/shared/shared-video-miniature/video-actions-dropdown.component.ts
+++ b/client/src/app/shared/shared-video-miniature/video-actions-dropdown.component.ts
@@ -1,10 +1,18 @@
 import { Component, EventEmitter, Input, OnChanges, Output, ViewChild } from '@angular/core'
 import { AuthService, ConfirmService, Notifier, ScreenService } from '@app/core'
-import { VideoBlockComponent, VideoBlockService, VideoReportComponent, BlocklistService } from '@app/shared/shared-moderation'
+import { BlocklistService, VideoBlockComponent, VideoBlockService, VideoReportComponent } from '@app/shared/shared-moderation'
 import { NgbDropdown } from '@ng-bootstrap/ng-bootstrap'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { VideoCaption } from '@shared/models'
-import { DropdownAction, DropdownButtonSize, DropdownDirection, RedundancyService, Video, VideoDetails, VideoService, Actor } from '../shared-main'
+import {
+  Actor,
+  DropdownAction,
+  DropdownButtonSize,
+  DropdownDirection,
+  RedundancyService,
+  Video,
+  VideoDetails,
+  VideoService
+} from '../shared-main'
 import { VideoAddToPlaylistComponent } from '../shared-video-playlist'
 import { VideoDownloadComponent } from './video-download.component'
 
@@ -71,8 +79,7 @@ export class VideoActionsDropdownComponent implements OnChanges {
     private videoBlocklistService: VideoBlockService,
     private screenService: ScreenService,
     private videoService: VideoService,
-    private redundancyService: RedundancyService,
-    private i18n: I18n
+    private redundancyService: RedundancyService
   ) { }
 
   get user () {
@@ -153,17 +160,15 @@ export class VideoActionsDropdownComponent implements OnChanges {
   /* Action handlers */
 
   async unblockVideo () {
-    const confirmMessage = this.i18n(
-      'Do you really want to unblock this video? It will be available again in the videos list.'
-    )
+    const confirmMessage = $localize`Do you really want to unblock this video? It will be available again in the videos list.`
 
-    const res = await this.confirmService.confirm(confirmMessage, this.i18n('Unblock'))
+    const res = await this.confirmService.confirm(confirmMessage, $localize`Unblock`)
     if (res === false) return
 
     this.videoBlocklistService.unblockVideo(this.video.id)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Video {{name}} unblocked.', { name: this.video.name }))
+            this.notifier.success($localize`Video ${this.video.name} unblocked.`)
 
             this.video.blacklisted = false
             this.video.blockedReason = null
@@ -178,14 +183,13 @@ export class VideoActionsDropdownComponent implements OnChanges {
   async removeVideo () {
     this.modalOpened.emit()
 
-    const res = await this.confirmService.confirm(this.i18n('Do you really want to delete this video?'), this.i18n('Delete'))
+    const res = await this.confirmService.confirm($localize`Do you really want to delete this video?`, $localize`Delete`)
     if (res === false) return
 
     this.videoService.removeVideo(this.video.id)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Video {{videoName}} deleted.', { videoName: this.video.name }))
-
+            this.notifier.success($localize`Video ${this.video.name} deleted.`)
             this.videoRemoved.emit()
           },
 
@@ -197,7 +201,7 @@ export class VideoActionsDropdownComponent implements OnChanges {
     this.redundancyService.addVideoRedundancy(this.video)
         .subscribe(
           () => {
-            const message = this.i18n('This video will be duplicated by your instance.')
+            const message = $localize`This video will be duplicated by your instance.`
             this.notifier.success(message)
           },
 
@@ -211,8 +215,7 @@ export class VideoActionsDropdownComponent implements OnChanges {
     this.blocklistService.blockAccountByUser(params)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Account {{nameWithHost}} muted.', params))
-
+            this.notifier.success($localize`Account ${params.nameWithHost} muted.`)
             this.videoAccountMuted.emit()
           },
 
@@ -236,7 +239,7 @@ export class VideoActionsDropdownComponent implements OnChanges {
     this.videoActions = [
       [
         {
-          label: this.i18n('Save to playlist'),
+          label: $localize`Save to playlist`,
           handler: () => this.playlistDropdown.toggle(),
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.playlist,
           iconName: 'playlist-add'
@@ -244,43 +247,43 @@ export class VideoActionsDropdownComponent implements OnChanges {
       ],
       [ // actions regarding the video
         {
-          label: this.i18n('Download'),
+          label: $localize`Download`,
           handler: () => this.showDownloadModal(),
           isDisplayed: () => this.displayOptions.download && this.isVideoDownloadable(),
           iconName: 'download'
         },
         {
-          label: this.i18n('Update'),
+          label: $localize`Update`,
           linkBuilder: ({ video }) => [ '/videos/update', video.uuid ],
           iconName: 'edit',
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.update && this.isVideoUpdatable()
         },
         {
-          label: this.i18n('Block'),
+          label: $localize`Block`,
           handler: () => this.showBlockModal(),
           iconName: 'no',
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.blacklist && this.isVideoBlockable()
         },
         {
-          label: this.i18n('Unblock'),
+          label: $localize`Unblock`,
           handler: () => this.unblockVideo(),
           iconName: 'undo',
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.blacklist && this.isVideoUnblockable()
         },
         {
-          label: this.i18n('Mirror'),
+          label: $localize`Mirror`,
           handler: () => this.duplicateVideo(),
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.duplicate && this.canVideoBeDuplicated(),
           iconName: 'cloud-download'
         },
         {
-          label: this.i18n('Delete'),
+          label: $localize`Delete`,
           handler: () => this.removeVideo(),
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.delete && this.isVideoRemovable(),
           iconName: 'delete'
         },
         {
-          label: this.i18n('Report'),
+          label: $localize`Report`,
           handler: () => this.showReportModal(),
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.report,
           iconName: 'flag'
@@ -288,7 +291,7 @@ export class VideoActionsDropdownComponent implements OnChanges {
       ],
       [ // actions regarding the account/its server
         {
-          label: this.i18n('Mute account'),
+          label: $localize`Mute account`,
           handler: () => this.muteVideoAccount(),
           isDisplayed: () => this.authService.isLoggedIn() && this.displayOptions.mute && this.isVideoAccountMutable(),
           iconName: 'no'
diff --git a/client/src/app/shared/shared-video-miniature/video-download.component.ts b/client/src/app/shared/shared-video-miniature/video-download.component.ts
index e3d6a1969..99838f712 100644
--- a/client/src/app/shared/shared-video-miniature/video-download.component.ts
+++ b/client/src/app/shared/shared-video-miniature/video-download.component.ts
@@ -2,7 +2,6 @@ import { mapValues, pick } from 'lodash-es'
 import { Component, ElementRef, ViewChild } from '@angular/core'
 import { AuthService, Notifier } from '@app/core'
 import { NgbActiveModal, NgbModal } from '@ng-bootstrap/ng-bootstrap'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { VideoCaption, VideoFile, VideoPrivacy } from '@shared/models'
 import { BytesPipe, NumberFormatterPipe, VideoDetails, VideoService } from '../shared-main'
 
@@ -38,8 +37,7 @@ export class VideoDownloadComponent {
     private notifier: Notifier,
     private modalService: NgbModal,
     private videoService: VideoService,
-    private auth: AuthService,
-    private i18n: I18n
+    private auth: AuthService
   ) {
     this.bytesPipe = new BytesPipe()
     this.numbersPipe = new NumberFormatterPipe()
@@ -47,8 +45,8 @@ export class VideoDownloadComponent {
 
   get typeText () {
     return this.type === 'video'
-      ? this.i18n('video')
-      : this.i18n('subtitles')
+      ? $localize`video`
+      : $localize`subtitles`
   }
 
   getVideoFiles () {
@@ -135,7 +133,7 @@ export class VideoDownloadComponent {
   }
 
   activateCopiedMessage () {
-    this.notifier.success(this.i18n('Copied'))
+    this.notifier.success($localize`Copied`)
   }
 
   switchToType (type: DownloadType) {
@@ -144,11 +142,11 @@ export class VideoDownloadComponent {
 
   getMetadataFormat (format: any) {
     const keyToTranslateFunction = {
-      'encoder': (value: string) => ({ label: this.i18n('Encoder'), value }),
-      'format_long_name': (value: string) => ({ label: this.i18n('Format name'), value }),
-      'size': (value: number) => ({ label: this.i18n('Size'), value: this.bytesPipe.transform(value, 2) }),
+      'encoder': (value: string) => ({ label: $localize`Encoder`, value }),
+      'format_long_name': (value: string) => ({ label: $localize`Format name`, value }),
+      'size': (value: number) => ({ label: $localize`Size`, value: this.bytesPipe.transform(value, 2) }),
       'bit_rate': (value: number) => ({
-        label: this.i18n('Bitrate'),
+        label: $localize`Bitrate`,
         value: `${this.numbersPipe.transform(value)}bps`
       })
     }
@@ -168,25 +166,25 @@ export class VideoDownloadComponent {
     if (!stream) return undefined
 
     let keyToTranslateFunction = {
-      'codec_long_name': (value: string) => ({ label: this.i18n('Codec'), value }),
-      'profile': (value: string) => ({ label: this.i18n('Profile'), value }),
+      'codec_long_name': (value: string) => ({ label: $localize`Codec`, value }),
+      'profile': (value: string) => ({ label: $localize`Profile`, value }),
       'bit_rate': (value: number) => ({
-        label: this.i18n('Bitrate'),
+        label: $localize`Bitrate`,
         value: `${this.numbersPipe.transform(value)}bps`
       })
     }
 
     if (type === 'video') {
       keyToTranslateFunction = Object.assign(keyToTranslateFunction, {
-        'width': (value: number) => ({ label: this.i18n('Resolution'), value: `${value}x${stream.height}` }),
-        'display_aspect_ratio': (value: string) => ({ label: this.i18n('Aspect ratio'), value }),
-        'avg_frame_rate': (value: string) => ({ label: this.i18n('Average frame rate'), value }),
-        'pix_fmt': (value: string) => ({ label: this.i18n('Pixel format'), value })
+        'width': (value: number) => ({ label: $localize`Resolution`, value: `${value}x${stream.height}` }),
+        'display_aspect_ratio': (value: string) => ({ label: $localize`Aspect ratio`, value }),
+        'avg_frame_rate': (value: string) => ({ label: $localize`Average frame rate`, value }),
+        'pix_fmt': (value: string) => ({ label: $localize`Pixel format`, value })
       })
     } else {
       keyToTranslateFunction = Object.assign(keyToTranslateFunction, {
-        'sample_rate': (value: number) => ({ label: this.i18n('Sample rate'), value }),
-        'channel_layout': (value: number) => ({ label: this.i18n('Channel Layout'), value })
+        'sample_rate': (value: number) => ({ label: $localize`Sample rate`, value }),
+        'channel_layout': (value: number) => ({ label: $localize`Channel Layout`, value })
       })
     }
 
diff --git a/client/src/app/shared/shared-video-miniature/video-miniature.component.ts b/client/src/app/shared/shared-video-miniature/video-miniature.component.ts
index 3c7046de5..cc5665ab1 100644
--- a/client/src/app/shared/shared-video-miniature/video-miniature.component.ts
+++ b/client/src/app/shared/shared-video-miniature/video-miniature.component.ts
@@ -11,7 +11,6 @@ import {
   Output
 } from '@angular/core'
 import { AuthService, ScreenService, ServerService, User } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig, VideoPlaylistType, VideoPrivacy, VideoState } from '@shared/models'
 import { Video } from '../shared-main'
 import { VideoPlaylistService } from '../shared-video-playlist'
@@ -95,7 +94,6 @@ export class VideoMiniatureComponent implements OnInit {
   constructor (
     private screenService: ScreenService,
     private serverService: ServerService,
-    private i18n: I18n,
     private authService: AuthService,
     private videoPlaylistService: VideoPlaylistService,
     private cd: ChangeDetectorRef,
@@ -116,10 +114,7 @@ export class VideoMiniatureComponent implements OnInit {
 
     this.setUpBy()
 
-    this.channelLinkTitle = this.i18n(
-      '{{name}} (channel page)',
-      { name: this.video.channel.name, handle: this.video.byVideoChannel }
-    )
+    this.channelLinkTitle = $localize`${this.video.channel.name} (channel page)`
 
     // We rely on mouseenter to lazy load actions
     if (this.screenService.isInTouchScreen()) {
@@ -164,24 +159,24 @@ export class VideoMiniatureComponent implements OnInit {
     if (!video.state) return ''
 
     if (video.privacy.id !== VideoPrivacy.PRIVATE && video.state.id === VideoState.PUBLISHED) {
-      return this.i18n('Published')
+      return $localize`Published`
     }
 
     if (video.scheduledUpdate) {
       const updateAt = new Date(video.scheduledUpdate.updateAt.toString()).toLocaleString(this.localeId)
-      return this.i18n('Publication scheduled on ') + updateAt
+      return $localize`Publication scheduled on ` + updateAt
     }
 
     if (video.state.id === VideoState.TO_TRANSCODE && video.waitTranscoding === true) {
-      return this.i18n('Waiting transcoding')
+      return $localize`Waiting transcoding`
     }
 
     if (video.state.id === VideoState.TO_TRANSCODE) {
-      return this.i18n('To transcode')
+      return $localize`To transcode`
     }
 
     if (video.state.id === VideoState.TO_IMPORT) {
-      return this.i18n('To import')
+      return $localize`To import`
     }
 
     return ''
diff --git a/client/src/app/shared/shared-video-miniature/videos-selection.component.ts b/client/src/app/shared/shared-video-miniature/videos-selection.component.ts
index 3e0e3b983..2b060b130 100644
--- a/client/src/app/shared/shared-video-miniature/videos-selection.component.ts
+++ b/client/src/app/shared/shared-video-miniature/videos-selection.component.ts
@@ -13,7 +13,6 @@ import {
 } from '@angular/core'
 import { ActivatedRoute, Router } from '@angular/router'
 import { AuthService, ComponentPagination, LocalStorageService, Notifier, ScreenService, ServerService, UserService } from '@app/core'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ResultList, VideoSortField } from '@shared/models'
 import { PeerTubeTemplateDirective, Video } from '../shared-main'
 import { AbstractVideoList } from './abstract-video-list'
@@ -45,7 +44,6 @@ export class VideosSelectionComponent extends AbstractVideoList implements OnIni
   globalButtonsTemplate: TemplateRef<any>
 
   constructor (
-    protected i18n: I18n,
     protected router: Router,
     protected route: ActivatedRoute,
     protected notifier: Notifier,
diff --git a/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts b/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
index f611fc46b..757ffa099 100644
--- a/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
+++ b/client/src/app/shared/shared-video-playlist/video-add-to-playlist.component.ts
@@ -4,7 +4,6 @@ import { debounceTime, filter } from 'rxjs/operators'
 import { ChangeDetectionStrategy, ChangeDetectorRef, Component, Input, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core'
 import { AuthService, DisableForReuseHook, Notifier } from '@app/core'
 import { FormReactive, FormValidatorService, VideoPlaylistValidatorsService } from '@app/shared/shared-forms'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { Video, VideoExistInPlaylist, VideoPlaylistCreate, VideoPlaylistElementCreate, VideoPlaylistPrivacy } from '@shared/models'
 import { secondsToTime } from '../../../assets/player/utils'
 import { CachedPlaylist, VideoPlaylistService } from './video-playlist.service'
@@ -53,7 +52,6 @@ export class VideoAddToPlaylistComponent extends FormReactive implements OnInit,
     protected formValidatorService: FormValidatorService,
     private authService: AuthService,
     private notifier: Notifier,
-    private i18n: I18n,
     private videoPlaylistService: VideoPlaylistService,
     private videoPlaylistValidatorsService: VideoPlaylistValidatorsService,
     private cd: ChangeDetectorRef
@@ -204,7 +202,7 @@ export class VideoAddToPlaylistComponent extends FormReactive implements OnInit,
     this.videoPlaylistService.removeVideoFromPlaylist(playlist.id, playlist.playlistElementId, this.video.id)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Video removed from {{name}}', { name: playlist.displayName }))
+            this.notifier.success($localize`Video removed from ${playlist.displayName}`)
           },
 
           err => {
@@ -262,8 +260,8 @@ export class VideoAddToPlaylistComponent extends FormReactive implements OnInit,
       .subscribe(
         () => {
           const message = body.startTimestamp || body.stopTimestamp
-            ? this.i18n('Video added in {{n}} at timestamps {{t}}', { n: playlist.displayName, t: this.formatTimestamp(playlist) })
-            : this.i18n('Video added in {{n}}', { n: playlist.displayName })
+            ? $localize`Video added in ${playlist.displayName} at timestamps ${this.formatTimestamp(playlist)}`
+            : $localize`Video added in ${playlist.displayName}`
 
           this.notifier.success(message)
         },
diff --git a/client/src/app/shared/shared-video-playlist/video-playlist-element-miniature.component.ts b/client/src/app/shared/shared-video-playlist/video-playlist-element-miniature.component.ts
index 57a5fbe61..5879c4978 100644
--- a/client/src/app/shared/shared-video-playlist/video-playlist-element-miniature.component.ts
+++ b/client/src/app/shared/shared-video-playlist/video-playlist-element-miniature.component.ts
@@ -2,7 +2,6 @@ import { ChangeDetectionStrategy, ChangeDetectorRef, Component, EventEmitter, In
 import { AuthService, Notifier, ServerService } from '@app/core'
 import { Video } from '@app/shared/shared-main'
 import { NgbDropdown } from '@ng-bootstrap/ng-bootstrap'
-import { I18n } from '@ngx-translate/i18n-polyfill'
 import { ServerConfig, VideoPlaylistElementType, VideoPlaylistElementUpdate } from '@shared/models'
 import { secondsToTime } from '../../../assets/player/utils'
 import { VideoPlaylistElement } from './video-playlist-element.model'
@@ -44,7 +43,6 @@ export class VideoPlaylistElementMiniatureComponent implements OnInit {
     private authService: AuthService,
     private serverService: ServerService,
     private notifier: Notifier,
-    private i18n: I18n,
     private videoPlaylistService: VideoPlaylistService,
     private cdr: ChangeDetectorRef
   ) {}
@@ -97,8 +95,7 @@ export class VideoPlaylistElementMiniatureComponent implements OnInit {
     this.videoPlaylistService.removeVideoFromPlaylist(this.playlist.id, playlistElement.id, videoId)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Video removed from {{name}}', { name: this.playlist.displayName }))
-
+            this.notifier.success($localize`Video removed from ${this.playlist.displayName}`)
             this.elementRemoved.emit(playlistElement)
           },
 
@@ -117,7 +114,7 @@ export class VideoPlaylistElementMiniatureComponent implements OnInit {
     this.videoPlaylistService.updateVideoOfPlaylist(this.playlist.id, playlistElement.id, body, this.playlistElement.video.id)
         .subscribe(
           () => {
-            this.notifier.success(this.i18n('Timestamps updated'))
+            this.notifier.success($localize`Timestamps updated`)
 
             playlistElement.startTimestamp = body.startTimestamp
             playlistElement.stopTimestamp = body.stopTimestamp
@@ -140,10 +137,10 @@ export class VideoPlaylistElementMiniatureComponent implements OnInit {
 
     if (start === null && stop === null) return ''
 
-    if (start !== null && stop === null) return this.i18n('Starts at ') + startFormatted
-    if (start === null && stop !== null) return this.i18n('Stops at ') + stopFormatted
+    if (start !== null && stop === null) return $localize`Starts at ` + startFormatted
+    if (start === null && stop !== null) return $localize`Stops at ` + stopFormatted
 
-    return this.i18n('Starts at ') + startFormatted + this.i18n(' and stops at ') + stopFormatted
+    return $localize`Starts at ` + startFormatted + $localize` and stops at ` + stopFormatted
   }
 
   onDropdownOpenChange () {