Ticket #24380: class-wp-image-editor-gd.2.diff

wp-includes/class-wp-image-editor-gd.php

@@ -353 +353 @@
                         if ( function_exists('imageistruecolor') && ! imageistruecolor( $image ) )
                                 imagetruecolortopalette( $image, false, imagecolorstotal( $image ) );
 
-                        if ( ! $this->make_image( $filename, 'imagepng', array( $image, $filename ) ) )
+                        $compression = - ( ( 0.09 * $this->quality ) - 9 ); // from 0 (no compression) to 9.
+                        
+                        if ( ! $this->make_image( $filename, 'imagepng', array( $image, $filename, $compression ) ) )
                                 return new WP_Error( 'image_save_error', __('Image Editor Save Failed') );
                 }
                 elseif ( 'image/jpeg' == $mime_type ) {