check source file type for png

matthieu-rolland · Jul 2, 2024 · 6793d47 · 6793d47
1 parent 2f3092d
commit 6793d47
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/classes/ImageManager.php b/classes/ImageManager.php
@@ -307,7 +307,7 @@ public static function resize(
         // If the output is PNG, fill with transparency. Else fill with white background.
         if (in_array($destinationFileType, ['png', 'webp', 'avif'])) {
             // if png color type is 3, the file is paletted (256 colors or less). Change palette to reduce file size
-            if ($destinationFileType == 'png' && self::getPNGColorType($sourceFile) == 3) {
+            if ($destinationFileType == 'png' && $sourceFileType == IMAGETYPE_PNG && self::getPNGColorType($sourceFile) == 3) {
                 imagetruecolortopalette($destImage, false, 255);
             } else {
                 imagealphablending($destImage, false);