diff --git a/packages/app-slide/package.json b/packages/app-slide/package.json
index 2044594..94a2c41 100644
--- a/packages/app-slide/package.json
+++ b/packages/app-slide/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@netless/app-slide",
-  "version": "0.2.85",
+  "version": "0.2.87-beta.0",
   "main": "dist/main.cjs.js",
   "module": "dist/main.es.js",
   "types": "dist/index.d.ts",
diff --git a/packages/app-slide/src/index.ts b/packages/app-slide/src/index.ts
index 56abff0..36a045d 100644
--- a/packages/app-slide/src/index.ts
+++ b/packages/app-slide/src/index.ts
@@ -96,6 +96,10 @@ export interface AppResult {
   prevPage: () => boolean;
   jumpToPage: (page: number) => boolean;
   setSildeReadonly: (bol: boolean) => void;
+  onScaleChanged: (cb: (scale: number) => void) => void;
+  scaleView: (to: number) => void;
+  getViewScale: () => number | undefined;
+  translateView: (offsetX: number, offsetY: number) => void;
 }
 
 const SlideApp: NetlessApp<Attributes, MagixEvents, AppOptions, AppResult> = {