diff --git a/backend/internal/handler/dto/settings.go b/backend/internal/handler/dto/settings.go
index eba009a7e6..99cd4bd4f5 100644
--- a/backend/internal/handler/dto/settings.go
+++ b/backend/internal/handler/dto/settings.go
@@ -9,13 +9,14 @@ import (
 
 // CustomMenuItem represents a user-configured custom menu entry.
 type CustomMenuItem struct {
-	ID         string `json:"id"`
-	Label      string `json:"label"`
-	IconSVG    string `json:"icon_svg"`
-	URL        string `json:"url"`
-	PageSlug   string `json:"page_slug,omitempty"`
-	Visibility string `json:"visibility"` // "user" or "admin"
-	SortOrder  int    `json:"sort_order"`
+	ID             string `json:"id"`
+	Label          string `json:"label"`
+	IconSVG        string `json:"icon_svg"`
+	URL            string `json:"url"`
+	PageSlug       string `json:"page_slug,omitempty"`
+	Visibility     string `json:"visibility"` // "user" or "admin"
+	SortOrder      int    `json:"sort_order"`
+	HideOpenButton bool   `json:"hide_open_button,omitempty"`
 }
 
 // CustomEndpoint represents an admin-configured API endpoint for quick copy.
diff --git a/frontend/src/i18n/locales/en/admin/settings.ts b/frontend/src/i18n/locales/en/admin/settings.ts
index da509a8251..eb5c74dfe3 100644
--- a/frontend/src/i18n/locales/en/admin/settings.ts
+++ b/frontend/src/i18n/locales/en/admin/settings.ts
@@ -677,6 +677,7 @@ export default {
         namePlaceholder: 'e.g. Help Center',
         url: 'Page URL',
         urlPlaceholder: 'https://example.com/page',
+        hideOpenButton: 'Hide the “Open in new tab” button',
         iconSvg: 'SVG Icon',
         iconSvgPlaceholder: '<svg>...</svg>',
         iconPreview: 'Icon Preview',
diff --git a/frontend/src/i18n/locales/zh/admin/settings.ts b/frontend/src/i18n/locales/zh/admin/settings.ts
index 5bdedb0104..5e0db540b0 100644
--- a/frontend/src/i18n/locales/zh/admin/settings.ts
+++ b/frontend/src/i18n/locales/zh/admin/settings.ts
@@ -672,6 +672,7 @@ export default {
         namePlaceholder: '如：帮助中心',
         url: '页面 URL',
         urlPlaceholder: 'https://example.com/page',
+        hideOpenButton: '隐藏“新窗口打开”按钮',
         iconSvg: 'SVG 图标',
         iconSvgPlaceholder: '<svg>...</svg>',
         iconPreview: '图标预览',
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 583f7e93dc..659ee1bb86 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -191,6 +191,7 @@ export interface CustomMenuItem {
   icon_svg: string
   url: string
   page_slug?: string
+  hide_open_button?: boolean
   visibility: 'user' | 'admin'
   sort_order: number
 }
diff --git a/frontend/src/views/admin/SettingsView.vue b/frontend/src/views/admin/SettingsView.vue
index 52e57ead51..ea994747ca 100644
--- a/frontend/src/views/admin/SettingsView.vue
+++ b/frontend/src/views/admin/SettingsView.vue
@@ -6763,6 +6763,17 @@
                     />
                   </div>
 
+                  <label class="flex items-center gap-2 sm:col-span-2">
+                    <input
+                      v-model="item.hide_open_button"
+                      type="checkbox"
+                      data-testid="custom-menu-hide-open-button"
+                    />
+                    <span class="text-sm text-gray-700 dark:text-gray-300">
+                      {{ t("admin.settings.customMenu.hideOpenButton") }}
+                    </span>
+                  </label>
+
                   <!-- SVG Icon (full width) -->
                   <div class="sm:col-span-2">
                     <label
@@ -9617,6 +9628,7 @@ const form = reactive<SettingsForm>({
     url: string;
     visibility: "user" | "admin";
     sort_order: number;
+    hide_open_button?: boolean;
   }>,
   custom_endpoints: [] as Array<{
     name: string;
diff --git a/frontend/src/views/admin/__tests__/SettingsView.spec.ts b/frontend/src/views/admin/__tests__/SettingsView.spec.ts
index 70fc723edb..8491ff9e30 100644
--- a/frontend/src/views/admin/__tests__/SettingsView.spec.ts
+++ b/frontend/src/views/admin/__tests__/SettingsView.spec.ts
@@ -720,6 +720,31 @@ describe("admin SettingsView payment visible method controls", () => {
     adminSettingsFetch.mockResolvedValue(undefined);
   });
 
+  it("loads and saves the open button visibility for each custom menu", async () => {
+    const menuItems = [
+      { id: "docs", label: "Docs", url: "https://example.com/docs", icon_svg: "", visibility: "user", sort_order: 0 },
+      { id: "help", label: "Help", url: "https://example.com/help", icon_svg: "", visibility: "user", sort_order: 1, hide_open_button: true },
+    ];
+    getSettings.mockResolvedValue({ ...baseSettingsResponse, custom_menu_items: menuItems });
+    const wrapper = mountView();
+    await flushPromises();
+
+    const toggles = wrapper.findAll<HTMLInputElement>('[data-testid="custom-menu-hide-open-button"]');
+    expect(toggles.map(toggle => toggle.element.checked)).toEqual([false, true]);
+    await toggles[0].setValue(true);
+    await toggles[1].setValue(false);
+    await wrapper.find("form").trigger("submit.prevent");
+    await flushPromises();
+
+    expect(updateSettings).toHaveBeenCalledWith(expect.objectContaining({
+      custom_menu_items: [
+        { ...menuItems[0], hide_open_button: true },
+        { ...menuItems[1], hide_open_button: false },
+      ],
+    }));
+    wrapper.unmount();
+  });
+
   it("submits the compact home page toggle", async () => {
     const wrapper = mountView();
     await flushPromises();
diff --git a/frontend/src/views/user/CustomPageView.vue b/frontend/src/views/user/CustomPageView.vue
index 10ddceb479..910b6dafa9 100644
--- a/frontend/src/views/user/CustomPageView.vue
+++ b/frontend/src/views/user/CustomPageView.vue
@@ -96,6 +96,7 @@
         <!-- Iframe embed mode -->
         <div v-else ref="embedShell" class="custom-embed-shell">
           <a
+            v-if="!menuItem?.hide_open_button"
             ref="openButton"
             :href="embeddedUrl"
             target="_blank"
diff --git a/frontend/src/views/user/__tests__/CustomPageView.spec.ts b/frontend/src/views/user/__tests__/CustomPageView.spec.ts
index 37b790d0b7..46aa4dca15 100644
--- a/frontend/src/views/user/__tests__/CustomPageView.spec.ts
+++ b/frontend/src/views/user/__tests__/CustomPageView.spec.ts
@@ -79,6 +79,13 @@ describe('custom page open button', () => {
     vi.unstubAllGlobals()
   })
 
+  it.each([undefined, false, true])('honors the per-menu hide button setting %s while keeping the iframe', (hidden) => {
+    Object.assign(appStore.cachedPublicSettings.custom_menu_items[0], { hide_open_button: hidden })
+    const wrapper = mountPage()
+    expect(wrapper.find('.custom-open-fab').exists()).toBe(hidden !== true)
+    expect(wrapper.get('iframe').attributes('src')).toContain('https://example.com/docs')
+  })
+
   it('preserves the embedded URL, secure link attributes, and normal clicks with small pointer movements', async () => {
     const { wrapper, button } = mountEmbed()
     expect(button.href).toBe(wrapper.get('iframe').attributes('src'))