diff --git a/app/src/asset/pdf/app.js b/app/src/asset/pdf/app.js
index a15005fee..a73104124 100644
--- a/app/src/asset/pdf/app.js
+++ b/app/src/asset/pdf/app.js
@@ -79,7 +79,6 @@ import { ViewHistory } from './view_history.js'
 import { Constants } from '../../constants'
 import { GenericExternalServices } from './genericcom'
 import { getPdfInstance, hlPDFRect } from '../anno'
-import { getAllModels } from '../../layout/getAll'
 
 const DISABLE_AUTO_FETCH_LOADING_BAR_TIMEOUT = 5000 // ms
 const FORCE_PAGES_LOADED_TIMEOUT = 10000 // ms
@@ -1772,7 +1771,6 @@ class PDFViewerApplication {
     _boundEvents.beforePrint = this.beforePrint.bind(this)
     _boundEvents.afterPrint = this.afterPrint.bind(this)
 
-    eventBus._on('resize', webViewerResize)
     eventBus._on('hashchange', webViewerHashchange)
     eventBus._on('beforeprint', _boundEvents.beforePrint)
     eventBus._on('afterprint', _boundEvents.afterPrint)
@@ -1868,7 +1866,6 @@ class PDFViewerApplication {
   unbindEvents () {
     const {eventBus, _boundEvents} = this
 
-    eventBus._off('resize', webViewerResize)
     eventBus._off('hashchange', webViewerHashchange)
     eventBus._off('beforeprint', _boundEvents.beforePrint)
     eventBus._off('afterprint', _boundEvents.afterPrint)
@@ -2357,26 +2354,6 @@ function webViewerSpreadModeChanged (evt) {
   }
 }
 
-function webViewerResize () {
-  getAllModels().asset.find(item => {
-    const pdfInstance = item.pdfObject
-    const {pdfDocument, pdfViewer} = pdfInstance
-    if (!pdfDocument) {
-      return
-    }
-    const currentScaleValue = pdfViewer.currentScaleValue
-    if (
-      currentScaleValue === 'auto' ||
-      currentScaleValue === 'page-fit' ||
-      currentScaleValue === 'page-width'
-    ) {
-      // Note: the scale is constant for 'page-actual'.
-      pdfViewer.currentScaleValue = currentScaleValue
-    }
-    pdfViewer.update()
-  })
-}
-
 function webViewerHashchange (evt) {
   const hash = evt.hash
   if (!hash) {
diff --git a/app/src/asset/renderAssets.ts b/app/src/asset/renderAssets.ts
index 7c1053a82..16f1a45df 100644
--- a/app/src/asset/renderAssets.ts
+++ b/app/src/asset/renderAssets.ts
@@ -1,5 +1,6 @@
 import {Constants} from "../constants";
 import {pathPosix} from "../util/pathName";
+import {getAllModels} from "../layout/getAll";
 
 export const renderAssetsPreview = (pathString: string) => {
     if (!pathString) {
@@ -16,3 +17,23 @@ export const renderAssetsPreview = (pathString: string) => {
         return pathString;
     }
 };
+
+export const pdfResize = () => {
+    getAllModels().asset.find(item => {
+        const pdfInstance = item.pdfObject
+        const {pdfDocument, pdfViewer} = pdfInstance
+        if (!pdfDocument) {
+            return
+        }
+        const currentScaleValue = pdfViewer.currentScaleValue
+        if (
+            currentScaleValue === 'auto' ||
+            currentScaleValue === 'page-fit' ||
+            currentScaleValue === 'page-width'
+        ) {
+            // Note: the scale is constant for 'page-actual'.
+            pdfViewer.currentScaleValue = currentScaleValue
+        }
+        pdfViewer.update()
+    })
+}
diff --git a/app/src/layout/util.ts b/app/src/layout/util.ts
index 81405194b..e66845845 100644
--- a/app/src/layout/util.ts
+++ b/app/src/layout/util.ts
@@ -25,6 +25,7 @@ import {getContenteditableElement} from "../protyle/wysiwyg/getBlock";
 import {Constants} from "../constants";
 import {openSearch} from "../search/spread";
 import {saveScroll} from "../protyle/scroll/saveScroll";
+import {pdfResize} from "../asset/renderAssets";
 
 export const setPanelFocus = (element: Element) => {
     if (element.classList.contains("block__icons--active") || element.classList.contains("layout__wnd--active")) {
@@ -429,6 +430,7 @@ export const resizeTabs = () => {
             }, 200);
         }
     });
+    pdfResize();
 };
 
 export const copyTab = (tab: Tab) => {