From: Tim Düsterhus <duesterhus@woltlab.com>
Date: Fri, 26 Feb 2021 11:01:57 +0000 (+0100)
Subject: Disable attachment scaling for GIFs
X-Git-Tag: 5.3.5~5
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=676831746919491b5c607b0ab896b5adac3dc7df;p=GitHub%2FWoltLab%2FWCF.git

Disable attachment scaling for GIFs

Resolves #4030
---

diff --git a/wcfsetup/install/files/js/WCF.Attachment.js b/wcfsetup/install/files/js/WCF.Attachment.js
index 80c031f577..34ff910301 100644
--- a/wcfsetup/install/files/js/WCF.Attachment.js
+++ b/wcfsetup/install/files/js/WCF.Attachment.js
@@ -335,8 +335,9 @@ WCF.Attachment.Upload = WCF.Upload.extend({
 				// As our resizer is based on Pica it will use multiple workers per image if possible.
 				promise = Array.prototype.reduce.call(files, (function (acc, file) {
 					return acc.then((function (arr) {
-						// Ignore anything that is not one of the 3 basic image types.
-						if (['image/png', 'image/gif', 'image/jpeg'].indexOf(file.type) === -1) {
+						// Ignore anything that is neither PNG nor JPEG. GIFs are not supported
+						// due to the support for animations.
+						if (['image/png', 'image/jpeg'].indexOf(file.type) === -1) {
 							arr.push(file);
 							return arr;
 						}