diff --git a/src/api/menuLayout.ts b/src/api/menuLayout.ts
index 40320d1..148367f 100644
--- a/src/api/menuLayout.ts
+++ b/src/api/menuLayout.ts
@@ -1,5 +1,7 @@
 import apiClient from './client';
 
+export type OpenIn = 'external' | 'webapp';
+
 export interface MenuButtonConfig {
   id: string;
   type: 'builtin' | 'custom';
@@ -8,6 +10,7 @@ export interface MenuButtonConfig {
   enabled: boolean;
   labels: Record<string, string>;
   url: string | null;
+  open_in: OpenIn;
 }
 
 export interface MenuRowConfig {
@@ -51,6 +54,7 @@ const DEFAULT_BUTTON: Omit<MenuButtonConfig, 'id' | 'type'> = {
   enabled: true,
   labels: {},
   url: null,
+  open_in: 'external',
 };
 
 function normalizeConfig(data: MenuConfig): MenuConfig {
diff --git a/src/components/admin/MenuEditorTab.tsx b/src/components/admin/MenuEditorTab.tsx
index d157d3a..0daa1dc 100644
--- a/src/components/admin/MenuEditorTab.tsx
+++ b/src/components/admin/MenuEditorTab.tsx
@@ -288,18 +288,40 @@ function ButtonChip({
             />
           </div>
 
-          {/* URL input (custom buttons only) */}
+          {/* URL input + open mode (custom buttons only) */}
           {!isBuiltin && (
-            <div>
-              <label className="mb-1.5 block text-xs font-medium text-dark-300">URL</label>
-              <input
-                type="url"
-                value={button.url || ''}
-                onChange={(e) => onUpdate({ url: e.target.value || null })}
-                placeholder="https://..."
-                className="w-full rounded-lg border border-dark-600 bg-dark-700/50 px-3 py-2 text-sm text-dark-100 placeholder-dark-500 transition-colors focus:border-accent-500 focus:outline-none"
-              />
-            </div>
+            <>
+              <div>
+                <label className="mb-1.5 block text-xs font-medium text-dark-300">URL</label>
+                <input
+                  type="url"
+                  value={button.url || ''}
+                  onChange={(e) => onUpdate({ url: e.target.value || null })}
+                  placeholder="https://..."
+                  className="w-full rounded-lg border border-dark-600 bg-dark-700/50 px-3 py-2 text-sm text-dark-100 placeholder-dark-500 transition-colors focus:border-accent-500 focus:outline-none"
+                />
+              </div>
+              <div>
+                <label className="mb-1.5 block text-xs font-medium text-dark-300">
+                  {t('admin.menuEditor.openIn')}
+                </label>
+                <div className="flex gap-1.5">
+                  {(['external', 'webapp'] as const).map((mode) => (
+                    <button
+                      key={mode}
+                      onClick={() => onUpdate({ open_in: mode })}
+                      className={`flex h-7 items-center gap-1.5 rounded-lg border px-2.5 text-xs font-medium transition-all ${
+                        button.open_in === mode
+                          ? 'border-accent-500 bg-accent-500/10 text-accent-400'
+                          : 'border-dark-600 bg-dark-700/50 text-dark-300 hover:border-dark-500'
+                      }`}
+                    >
+                      {t(`admin.menuEditor.openMode.${mode}`)}
+                    </button>
+                  ))}
+                </div>
+              </div>
+            </>
           )}
 
           {/* Localized labels */}
@@ -665,6 +687,7 @@ export function MenuEditorTab() {
       enabled: true,
       labels: {},
       url: null,
+      open_in: 'external',
     };
     setDraftConfig((prev) => ({
       ...prev,
@@ -683,6 +706,7 @@ export function MenuEditorTab() {
       enabled: true,
       labels: {},
       url: '',
+      open_in: 'external',
     };
     setDraftConfig((prev) => ({
       ...prev,
diff --git a/src/locales/en.json b/src/locales/en.json
index d89c9a0..247732c 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -1781,6 +1781,11 @@
       "customLabelsHint": "Empty = default label",
       "moveUp": "Move up",
       "moveDown": "Move down",
+      "openIn": "Open in",
+      "openMode": {
+        "external": "External browser",
+        "webapp": "Telegram miniapp"
+      },
       "invalidUrl": "Please provide a valid URL (http:// or https://) for all custom buttons"
     },
     "apps": {
diff --git a/src/locales/fa.json b/src/locales/fa.json
index 43c3f91..de94769 100644
--- a/src/locales/fa.json
+++ b/src/locales/fa.json
@@ -1443,6 +1443,11 @@
       "customLabelsHint": "متن دکمه برای هر زبان ربات",
       "moveUp": "انتقال به بالا",
       "moveDown": "انتقال به پایین",
+      "openIn": "باز کردن در",
+      "openMode": {
+        "external": "مرورگر خارجی",
+        "webapp": "مینی‌اپ تلگرام"
+      },
       "invalidUrl": "لطفاً برای تمام دکمه‌های سفارشی یک URL معتبر وارد کنید (http:// یا https://)"
     },
     "apps": {
diff --git a/src/locales/ru.json b/src/locales/ru.json
index 39b1611..213ad6c 100644
--- a/src/locales/ru.json
+++ b/src/locales/ru.json
@@ -2292,6 +2292,11 @@
       "customLabelsHint": "Пустое поле = название по умолчанию",
       "moveUp": "Переместить вверх",
       "moveDown": "Переместить вниз",
+      "openIn": "Открывать в",
+      "openMode": {
+        "external": "Внешний браузер",
+        "webapp": "Telegram miniapp"
+      },
       "invalidUrl": "Укажите корректный URL (http:// или https://) для всех пользовательских кнопок"
     },
     "apps": {
diff --git a/src/locales/zh.json b/src/locales/zh.json
index 1edb919..c0b7307 100644
--- a/src/locales/zh.json
+++ b/src/locales/zh.json
@@ -1481,6 +1481,11 @@
       "customLabelsHint": "每种语言的按钮文本",
       "moveUp": "上移",
       "moveDown": "下移",
+      "openIn": "打开方式",
+      "openMode": {
+        "external": "外部浏览器",
+        "webapp": "Telegram 小程序"
+      },
       "invalidUrl": "请为所有自定义按钮提供有效的URL（http:// 或 https://）"
     },
     "apps": {