diff --git a/public/index/constants.js b/public/index/constants.js
index 73e38d6..66316e9 100644
--- a/public/index/constants.js
+++ b/public/index/constants.js
@@ -14,7 +14,7 @@
 export const SUPPORTED_FILE_TYPES = [
   {
     name: "PNG",
-    extensions: [".png"],
+    extensions: [".png", ".apng"],
     mimeType: "image/png",
     route: "/png",
     mimeSniffBytePattern: [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A],