From 7a3260ae9e1095beff4621e7031068a83c6a3ab1 Mon Sep 17 00:00:00 2001
From: Kevin Decherf <kevin@kdecherf.com>
Date: Wed, 29 Mar 2017 21:58:29 +0200
Subject: Save alpha channel when downloading PNG images

Fixes #2805

Signed-off-by: Kevin Decherf <kevin@kdecherf.com>
---
 src/Wallabag/CoreBundle/Helper/DownloadImages.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Wallabag/CoreBundle/Helper/DownloadImages.php b/src/Wallabag/CoreBundle/Helper/DownloadImages.php
index c83f9618..0d330d2a 100644
--- a/src/Wallabag/CoreBundle/Helper/DownloadImages.php
+++ b/src/Wallabag/CoreBundle/Helper/DownloadImages.php
@@ -144,6 +144,8 @@ class DownloadImages
                 $this->logger->debug('DownloadImages: Re-creating jpg');
                 break;
             case 'png':
+                imagealphablending($im, false);
+                imagesavealpha($im, true);
                 imagepng($im, $localPath, ceil(self::REGENERATE_PICTURES_QUALITY / 100 * 9));
                 $this->logger->debug('DownloadImages: Re-creating png');
         }
-- 
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