Fix: #3805 - missing cache-control headers on media files and thumbnails

1 files changed, 3 insertions, 1 deletions

diff --git a/app/Http/RequestHandlers/MediaFileThumbnail.php b/app/Http/RequestHandlers/MediaFileThumbnail.php
index 79cec2887e..11a3f41424 100644
--- a/app/Http/RequestHandlers/MediaFileThumbnail.php
+++ b/app/Http/RequestHandlers/MediaFileThumbnail.php
@@ -80,13 +80,15 @@ class MediaFileThumbnail implements RequestHandlerInterface
 
                 $image_factory = Registry::imageFactory();
 
-                return $image_factory->mediaFileThumbnailResponse(
+                $response = $image_factory->mediaFileThumbnailResponse(
                     $media_file,
                     (int) $params['w'],
                     (int) $params['h'],
                     $params['fit'],
                     $image_factory->fileNeedsWatermark($media_file, $user)
                 );
+
+                return $response->withHeader('Cache-Control', 'public,max-age=31536000');
             }
         }