diff --git a/app/src/constants.ts b/app/src/constants.ts
index f226eeb95..0bc967adc 100644
--- a/app/src/constants.ts
+++ b/app/src/constants.ts
@@ -389,7 +389,7 @@ export abstract class Constants {
     public static readonly SIYUAN_IMAGE_FOLDER: string = "1f4d1";
 
     // assets
-    public static readonly SIYUAN_ASSETS_IMAGE: string[] = [".apng", ".ico", ".cur", ".jpg", ".jpe", ".jpeg", ".jfif", ".pjp", ".pjpeg", ".png", ".gif", ".webp", ".bmp", ".svg"];
+    public static readonly SIYUAN_ASSETS_IMAGE: string[] = [".apng", ".ico", ".cur", ".jpg", ".jpe", ".jpeg", ".jfif", ".pjp", ".pjpeg", ".png", ".gif", ".webp", ".bmp", ".svg", ".avif"];
     public static readonly SIYUAN_ASSETS_AUDIO: string[] = [".mp3", ".wav", ".ogg", ".m4a"];
     public static readonly SIYUAN_ASSETS_VIDEO: string[] = [".mov", ".weba", ".mkv", ".mp4", ".webm"];
     public static readonly SIYUAN_ASSETS_EXTS: string[] = [".pdf"].concat(Constants.SIYUAN_ASSETS_IMAGE).concat(Constants.SIYUAN_ASSETS_AUDIO).concat(Constants.SIYUAN_ASSETS_VIDEO);