diff --git a/lib/net/networking_utils.js b/lib/net/networking_utils.js
index c0648ff656..b2970ed86c 100644
--- a/lib/net/networking_utils.js
+++ b/lib/net/networking_utils.js
@@ -103,4 +103,9 @@ shaka.net.NetworkingUtils.EXTENSIONS_TO_MIME_TYPES_ = {
   'lrc': 'application/x-subtitle-lrc',
   'ssa': 'text/x-ssa',
   'ass': 'text/x-ssa',
+  'jpg': 'image/jpeg',
+  'png': 'image/png',
+  'svg': 'image/svg+xml',
+  'webp': 'image/webp',
+  'avif': 'image/avif',
 };