diff --git a/packages/extension/PRIVACY.md b/packages/extension/PRIVACY.md
index ddda4a0..a6333e5 100644
--- a/packages/extension/PRIVACY.md
+++ b/packages/extension/PRIVACY.md
@@ -1,6 +1,6 @@
 # Privacy Policy for Page Agent Extension
 
-**Last updated:** January 2026
+**Last updated:** February 2026
 
 ## Overview
 
@@ -26,6 +26,7 @@ are sent to the LLM API endpoint configured in **your settings**.
 **If you use our testing endpoint**, your requests are proxied to [DeepSeek](https://deepseek.com) for AI processing. Regarding this test endpoint:
 
 - This endpoint is provided for evaluation purposes only and is not recommended for production or daily use
+- The free model provided may change at any time without prior notice
 - We do **not** store your task content, page content, or visited URLs
 - Minimal logging (timestamps, request metadata, IP addresses) may occur for abuse prevention and service stability
 - DeepSeek's [Privacy Policy](https://cdn.deepseek.com/policies/en-US/deepseek-privacy-policy.html) applies to their processing of your requests
diff --git a/packages/extension/docs/description.txt b/packages/extension/docs/description.txt
new file mode 100644
index 0000000..a4927a0
--- /dev/null
+++ b/packages/extension/docs/description.txt
@@ -0,0 +1,30 @@
+AI-powered browser automation. Control web pages with natural language.
+
+Page Agent Ext — AI-Powered Browser Automation
+
+🌟 What is Page Agent Ext?
+
+Page Agent Ext brings AI-powered automation to your browser. Built on the open-source Page Agent framework, it lets you control web pages across multiple tabs using natural language — no scripting required.
+
+🌟 Key Features:
+
+- Natural Language Control — Command your browser in plain language, no code needed
+- Cross-Tab Automation — Seamlessly operate across multiple tabs and pages
+- Smart HTML Cleaning — Intelligently extracts and simplifies page structure for accurate AI understanding
+- Bring Your Own LLM — Use OpenAI, Anthropic, or any compatible API with full data control
+- Privacy-First — Zero data collection; all data flows directly to your chosen LLM provider
+- Open Source — MIT licensed, built on the Page Agent framework with full transparency
+
+🌟 How It Works & Privacy:
+
+Page Agent Ext performs DOM analysis locally in your browser. When you initiate a task, sanitized page structure is sent to the LLM API you configure. Your data is never collected or stored by us.
+
+- Your API Key — Configure your own LLM API (OpenAI, Anthropic, etc.). Data goes directly to your provider
+- Test API — A free test endpoint is available for evaluation; we recommend your own key for regular use
+
+Privacy policy: https://github.com/alibaba/page-agent/blob/main/packages/extension/PRIVACY.md
+
+🌟 Open Source:
+
+This project is MIT licensed. Review the code, verify privacy claims, or extend it for your needs:
+https://github.com/alibaba/page-agent
diff --git a/packages/extension/docs/description_zh.txt b/packages/extension/docs/description_zh.txt
new file mode 100644
index 0000000..013afa4
--- /dev/null
+++ b/packages/extension/docs/description_zh.txt
@@ -0,0 +1,30 @@
+AI 驱动的浏览器自动化助手，用自然语言控制网页。
+
+Page Agent Ext — AI 驱动的浏览器自动化助手
+
+🌟 什么是 Page Agent Ext？
+
+Page Agent Ext 为浏览器带来 AI 自动化能力。基于开源的 Page Agent 框架，你可以用自然语言跨标签页控制网页，无需编写任何脚本。
+
+🌟 核心特性：
+
+- 自然语言控制 — 用日常语言指挥浏览器，无需编程
+- 跨标签页操作 — 在多个标签页之间无缝切换和操控
+- HTML 智能清洗 — 智能提取和精简页面结构，让 AI 准确理解网页内容
+- 使用你自己的模型 — 支持 OpenAI、Anthropic 或任何兼容 API，数据完全自主可控
+- 隐私优先 — 零数据收集，所有数据直接发送到你配置的 LLM 服务商
+- 开源透明 — MIT 协议，基于 Page Agent 开源框架，代码完全公开
+
+🌟 工作原理与隐私：
+
+Page Agent Ext 在浏览器本地进行 DOM 分析。当你发起任务时，经清洗的页面结构会发送到你配置的 LLM API。我们不会收集或存储你的任何数据。
+
+- 你的 API Key — 配置你自己的 LLM API（OpenAI、Anthropic 等），数据直接发送到你的服务商
+- 测试 API — 提供免费测试端点供体验，日常使用建议配置自己的 Key
+
+隐私政策：https://github.com/alibaba/page-agent/blob/main/packages/extension/PRIVACY.md
+
+🌟 开源项目：
+
+MIT 协议开源。查看源码、验证隐私承诺，或按需扩展：
+https://github.com/alibaba/page-agent
diff --git a/packages/extension/public/_locales/en/messages.json b/packages/extension/public/_locales/en/messages.json
new file mode 100644
index 0000000..6a30abd
--- /dev/null
+++ b/packages/extension/public/_locales/en/messages.json
@@ -0,0 +1,11 @@
+{
+	"extName": {
+		"message": "Page Agent Ext"
+	},
+	"extDescription": {
+		"message": "AI-powered browser automation assistant. Control web pages with natural language."
+	},
+	"extActionTitle": {
+		"message": "Open Page Agent"
+	}
+}
diff --git a/packages/extension/public/_locales/zh_CN/messages.json b/packages/extension/public/_locales/zh_CN/messages.json
new file mode 100644
index 0000000..d25db95
--- /dev/null
+++ b/packages/extension/public/_locales/zh_CN/messages.json
@@ -0,0 +1,11 @@
+{
+	"extName": {
+		"message": "Page Agent Ext"
+	},
+	"extDescription": {
+		"message": "AI 驱动的浏览器自动化助手，用自然语言控制网页。"
+	},
+	"extActionTitle": {
+		"message": "打开 Page Agent"
+	}
+}
diff --git a/packages/extension/wxt.config.js b/packages/extension/wxt.config.js
index 0184277..2dbebe4 100644
--- a/packages/extension/wxt.config.js
+++ b/packages/extension/wxt.config.js
@@ -38,9 +38,9 @@ export default defineConfig({
 		},
 	}),
 	manifest: {
-		name: 'Page Agent Ext',
-		description:
-			'AI-powered browser automation assistant. Control web pages with natural language.',
+		default_locale: 'en',
+		name: '__MSG_extName__',
+		description: '__MSG_extDescription__',
 		homepage_url: 'https://alibaba.github.io/page-agent/',
 		permissions: ['tabs', 'tabGroups', 'sidePanel', 'storage'],
 		host_permissions: ['<all_urls>'],
@@ -48,7 +48,7 @@ export default defineConfig({
 			64: 'assets/page-agent-64.png',
 		},
 		action: {
-			default_title: 'Open Page Agent',
+			default_title: '__MSG_extActionTitle__',
 		},
 		web_accessible_resources: [
 			{