diff --git a/app/electron/main.js b/app/electron/main.js
index 065397845..cc07200a9 100644
--- a/app/electron/main.js
+++ b/app/electron/main.js
@@ -870,7 +870,7 @@ app.whenReady().then(() => {
             modal: true,
             show: true,
             width: 1032,
-            height: 650,
+            height: 725,
             resizable: false,
             frame: "darwin" === process.platform,
             icon: path.join(appDir, "stage", "icon-large.png"),
diff --git a/app/src/protyle/export/index.ts b/app/src/protyle/export/index.ts
index 1d1fe76ec..915c6fcf2 100644
--- a/app/src/protyle/export/index.ts
+++ b/app/src/protyle/export/index.ts
@@ -13,6 +13,7 @@ import {Dialog} from "../../dialog";
 import {pathPosix} from "../../util/pathName";
 import {replaceLocalPath} from "../../editor/rename";
 import {setStorageVal} from "../util/compatibility";
+import {needSubscribe} from "../../util/needSubscribe";
 
 export const saveExport = (option: IExportOptions) => {
     /// #if !BROWSER
@@ -245,6 +246,7 @@ const renderPDF = (id: string) => {
         </div>
         <span class="fn__hr"></span>
         <input id="watermark" class="b3-switch" type="checkbox" ${localData.watermark ? "checked" : ""}>
+        <div style="display:none;font-size: 12px;margin-top: 12px;color: var(--b3-theme-on-surface);">${window.siyuan.languages._kernel[29]}</div>
     </label>
     <div class="fn__flex">
       <div class="fn__flex-1"></div>
@@ -448,7 +450,13 @@ id="preview">
         mergeSubdocsElement.addEventListener('change', () => {
             refreshPreview();
         });
-        
+        const  watermarkElement = actionElement.querySelector('#watermark');
+        watermarkElement.addEventListener('change', () => {
+            if (watermarkElement.checked && ${needSubscribe("")}) {
+                watermarkElement.nextElementSibling.style.display = "";
+                watermarkElement.checked = false;
+            }
+        });
         const refreshPreview = () => {
           previewElement.innerHTML = '<div class="fn__loading" style="left:0"><img width="48px" src="${servePath}/stage/loading-pure.svg"></div>'
             fetchPost("/api/export/exportPreviewHTML", {
@@ -520,7 +528,7 @@ id="preview">
               },
               keepFold: keepFoldElement.checked,
               mergeSubdocs: mergeSubdocsElement.checked,
-              watermark: actionElement.querySelector('#watermark').checked,
+              watermark: watermarkElement.checked,
               removeAssets: actionElement.querySelector("#removeAssets").checked,
               rootId: "${id}",
               rootTitle: response.data.name,
diff --git a/app/src/protyle/export/util.ts b/app/src/protyle/export/util.ts
index a8e602a24..fe845d876 100644
--- a/app/src/protyle/export/util.ts
+++ b/app/src/protyle/export/util.ts
@@ -29,11 +29,9 @@ export const exportImage = (id: string) => {
     const exportDialog = new Dialog({
         title: window.siyuan.languages.exportAsImage,
         content: `<div class="b3-dialog__content" style="${isMobile() ? "padding:8px;" : ""};background-color: var(--b3-theme-background)">
-    <div style="${isMobile() ? "padding: 16px;margin: 16px 0" : "padding: 48px;margin: 8px 0 24px"};border: 1px solid var(--b3-border-color);border-radius: var(--b3-border-radius-b);" 
+    <div style="${isMobile() ? "padding: 16px;margin: 8px 0" : "padding: 48px;margin: 8px 0"};border: 1px solid var(--b3-border-color);border-radius: var(--b3-border-radius-b);" 
 class="export-img protyle-wysiwyg${window.siyuan.config.editor.displayBookmarkIcon ? " protyle-wysiwyg--attr" : ""}" 
 id="preview"></div>
-    <div class="fn__hr--b"></div>
-    <div class="fn__hr--b"></div>
 </div>
 <div class="b3-dialog__action">
     <label class="fn__flex">