diff --git a/.env b/.env
index a429922..e04fb10 100644
--- a/.env
+++ b/.env
@@ -1,3 +1,5 @@
 GENERATE_SOURCEMAP=false
 
 REACT_APP_NAME=KISS Translator
+REACT_APP_VERSION=1.2.3
+REACT_APP_HOMEPAGE=https://github.com/fishjar/kiss-translator
diff --git a/config-overrides.js b/config-overrides.js
index 3eab540..d969632 100644
--- a/config-overrides.js
+++ b/config-overrides.js
@@ -2,74 +2,138 @@ const paths = require("react-scripts/config/paths");
 const HtmlWebpackPlugin = require("html-webpack-plugin");
 const { WebpackManifestPlugin } = require("webpack-manifest-plugin");
 const MiniCssExtractPlugin = require("mini-css-extract-plugin");
+const webpack = require("webpack");
+
+const isEnvUserscript = process.env.REACT_APP_CLIENT === "userscript";
+
+const banner = `// ==UserScript==
+// @name          ${process.env.REACT_APP_NAME}
+// @namespace     ${process.env.REACT_APP_HOMEPAGE}
+// @version       ${process.env.REACT_APP_VERSION}
+// @description   A minimalist bilingual translation extension.
+// @author        Gabe<yugang2002@gmail.com>
+// @homepageURL   ${process.env.REACT_APP_HOMEPAGE}
+// @match         *://*/*
+// @icon          https://raw.githubusercontent.com/fishjar/kiss-translator/master/public/images/logo192.png
+// @downloadURL   https://raw.githubusercontent.com/fishjar/kiss-translator/master/dist/userscript/kiss-translator.user.js
+// @updateURL     https://raw.githubusercontent.com/fishjar/kiss-translator/master/dist/userscript/kiss-translator.user.js
+// @grant         GM_xmlhttpRequest
+// @grant         GM.xmlhttpRequest
+// @grant         GM_setValue
+// @grant         GM_getValue
+// @grant         GM.setValue
+// @grant         GM.getValue
+// @connect       translate.googleapis.com
+// @connect       api-edge.cognitive.microsofttranslator.com
+// @connect       edge.microsoft.com
+// @connect       api.openai.com
+// @connect       localhost
+// ==/UserScript==
+
+`;
+
+// 扩展
+const extWebpack = (config, env) => {
+  const isEnvProduction = env === "production";
+  const minify = isEnvProduction && {
+    removeComments: true,
+    collapseWhitespace: true,
+    removeRedundantAttributes: true,
+    useShortDoctype: true,
+    removeEmptyAttributes: true,
+    removeStyleLinkTypeAttributes: true,
+    keepClosingSlash: true,
+    minifyJS: true,
+    minifyCSS: true,
+    minifyURLs: true,
+  };
+  const names = [
+    "HtmlWebpackPlugin",
+    "WebpackManifestPlugin",
+    "MiniCssExtractPlugin",
+  ];
+
+  config.entry = {
+    popup: paths.appIndexJs,
+    options: paths.appSrc + "/options.js",
+    background: paths.appSrc + "/background.js",
+    content: paths.appSrc + "/content.js",
+  };
+
+  config.output.filename = "[name].js";
+  config.output.assetModuleFilename = "media/[name][ext]";
+  config.optimization.splitChunks = { cacheGroups: { default: false } };
+  config.optimization.runtimeChunk = false;
+
+  config.plugins = config.plugins.filter(
+    (plugin) => !names.includes(plugin.constructor.name)
+  );
+
+  config.plugins.push(
+    new HtmlWebpackPlugin({
+      inject: true,
+      chunks: ["options"],
+      template: paths.appHtml,
+      filename: "options.html",
+      minify,
+    }),
+    new HtmlWebpackPlugin({
+      inject: true,
+      chunks: ["content"],
+      template: paths.appPublic + "/content.html",
+      filename: "content.html",
+      minify,
+    }),
+    new HtmlWebpackPlugin({
+      inject: true,
+      chunks: ["popup"],
+      template: paths.appHtml,
+      filename: "popup.html",
+      minify,
+    }),
+    new WebpackManifestPlugin({
+      fileName: "asset-manifest.json",
+    }),
+    new MiniCssExtractPlugin({
+      filename: "css/[name].css",
+    })
+  );
+
+  return config;
+};
+
+// 油猴
+const userscriptWebpack = (config, env) => {
+  const names = [
+    "HtmlWebpackPlugin",
+    "WebpackManifestPlugin",
+    "MiniCssExtractPlugin",
+  ];
+
+  config.entry = {
+    userscript: paths.appSrc + "/userscript.js",
+  };
+
+  config.output.filename = "kiss-translator.user.js";
+  config.optimization.splitChunks = { cacheGroups: { default: false } };
+  config.optimization.runtimeChunk = false;
+  config.optimization.minimize = false;
+
+  config.plugins = config.plugins.filter(
+    (plugin) => !names.includes(plugin.constructor.name)
+  );
+
+  config.plugins.push(
+    new webpack.BannerPlugin({
+      banner,
+      raw: true,
+      entryOnly: true,
+    })
+  );
+
+  return config;
+};
 
 module.exports = {
-  webpack: (config, env) => {
-    const isEnvProduction = env === "production";
-    const minify = isEnvProduction && {
-      removeComments: true,
-      collapseWhitespace: true,
-      removeRedundantAttributes: true,
-      useShortDoctype: true,
-      removeEmptyAttributes: true,
-      removeStyleLinkTypeAttributes: true,
-      keepClosingSlash: true,
-      minifyJS: true,
-      minifyCSS: true,
-      minifyURLs: true,
-    };
-    const names = [
-      "HtmlWebpackPlugin",
-      "WebpackManifestPlugin",
-      "MiniCssExtractPlugin",
-    ];
-
-    config.entry = {
-      popup: paths.appIndexJs,
-      options: paths.appSrc + "/options.js",
-      background: paths.appSrc + "/background.js",
-      content: paths.appSrc + "/content.js",
-    };
-
-    config.output.filename = "[name].js";
-    config.output.assetModuleFilename = "media/[name][ext]";
-    config.optimization.splitChunks = { cacheGroups: { default: false } };
-    config.optimization.runtimeChunk = false;
-
-    config.plugins = config.plugins.filter(
-      (plugin) => !names.includes(plugin.constructor.name)
-    );
-
-    config.plugins.push(
-      new HtmlWebpackPlugin({
-        inject: true,
-        chunks: ["options"],
-        template: paths.appHtml,
-        filename: "options.html",
-        minify,
-      }),
-      new HtmlWebpackPlugin({
-        inject: true,
-        chunks: ["content"],
-        template: paths.appPublic + "/content.html",
-        filename: "content.html",
-        minify,
-      }),
-      new HtmlWebpackPlugin({
-        inject: true,
-        chunks: ["popup"],
-        template: paths.appHtml,
-        filename: "popup.html",
-        minify,
-      }),
-      new WebpackManifestPlugin({
-        fileName: "asset-manifest.json",
-      }),
-      new MiniCssExtractPlugin({
-        filename: "css/[name].css",
-      })
-    );
-
-    return config;
-  },
+  webpack: isEnvUserscript ? userscriptWebpack : extWebpack,
 };
diff --git a/package.json b/package.json
index 15be2c1..c914bad 100644
--- a/package.json
+++ b/package.json
@@ -19,9 +19,11 @@
   },
   "scripts": {
     "start": "REACT_APP_CLIENT=web react-app-rewired start",
+    "start:userscript": "REACT_APP_CLIENT=userscript react-app-rewired start",
     "build": "BUILD_PATH=./build/chrome REACT_APP_CLIENT=chrome react-app-rewired build && rm ./build/chrome/manifest.firefox.json",
     "build:edge": "BUILD_PATH=./build/edge REACT_APP_CLIENT=edge react-app-rewired build && rm ./build/edge/manifest.firefox.json",
     "build:firefox": "BUILD_PATH=./build/firefox REACT_APP_CLIENT=firefox react-app-rewired build && rm ./build/firefox/manifest.json && mv ./build/firefox/manifest.firefox.json ./build/firefox/manifest.json",
+    "build:userscript": "BUILD_PATH=./build/userscript REACT_APP_CLIENT=userscript react-app-rewired build",
     "build:all": "yarn build && yarn build:edge && yarn build:firefox",
     "dist": "yarn build:all && rm -r dist && cp -r build dist",
     "test": "react-app-rewired test",
diff --git a/src/config/i18n.js b/src/config/i18n.js
index 74a7986..f41e5f0 100644
--- a/src/config/i18n.js
+++ b/src/config/i18n.js
@@ -1,5 +1,3 @@
-const URL_APP_HOMEPAGE = "https://github.com/fishjar/kiss-translator";
-
 export const UI_LANGS = [
   ["zh", "中文"],
   ["en", "English"],
@@ -35,8 +33,8 @@ export const I18N = {
     en: `README.en.md`,
   },
   about_md_local: {
-    zh: `请 [点击这里](${URL_APP_HOMEPAGE}) 查看详情。`,
-    en: `Please [click here](${URL_APP_HOMEPAGE}) for details.`,
+    zh: `请 [点击这里](${process.env.REACT_APP_HOMEPAGE}) 查看详情。`,
+    en: `Please [click here](${process.env.REACT_APP_HOMEPAGE}) for details.`,
   },
   ui_lang: {
     zh: `界面语言`,
diff --git a/src/config/index.js b/src/config/index.js
index d15bb3a..c436d1c 100644
--- a/src/config/index.js
+++ b/src/config/index.js
@@ -129,7 +129,7 @@ export const DEFAULT_RULE = {
   fromLang: "auto",
   toLang: "zh-CN",
   textStyle: OPT_STYLE_DASHLINE,
-  transOpen: true,
+  transOpen: false,
 };
 
 export const DEFAULT_SETTING = {
diff --git a/src/content.js b/src/content.js
index 3bd81b4..444b217 100644
--- a/src/content.js
+++ b/src/content.js
@@ -1,129 +1,13 @@
 import { browser } from "./libs/browser";
-import { createRoot } from "react-dom/client";
 import {
-  APP_LCNAME,
   MSG_TRANS_TOGGLE,
   MSG_TRANS_GETRULE,
   MSG_TRANS_PUTRULE,
-  TRANS_MIN_LENGTH,
-  TRANS_MAX_LENGTH,
 } from "./config";
-import Content from "./views/Content";
-import { StoragesProvider } from "./hooks/Storage";
-import { queryEls, getRules, matchRule } from "./libs";
+import { getRules, matchRule } from "./libs";
 import { getSetting } from "./libs";
 import { transPool } from "./libs/pool";
-
-/**
- * 翻译类
- */
-class Translator {
-  _rule = {};
-
-  _interseObserver = new IntersectionObserver(
-    (intersections) => {
-      intersections.forEach((intersection) => {
-        if (intersection.isIntersecting) {
-          this._render(intersection.target);
-          this._interseObserver.unobserve(intersection.target);
-        }
-      });
-    },
-    {
-      threshold: 0.1,
-    }
-  );
-
-  _mutaObserver = new MutationObserver((mutations) => {
-    mutations.forEach((mutation) => {
-      mutation.addedNodes.forEach((node) => {
-        try {
-          queryEls(this._rule.selector, node).forEach((el) => {
-            this._interseObserver.observe(el);
-          });
-        } catch (err) {
-          //
-        }
-      });
-    });
-  });
-
-  constructor(rule) {
-    this._rule = rule;
-    if (rule.transOpen) {
-      this._register();
-    }
-  }
-
-  get rule() {
-    return this._rule;
-  }
-
-  updateRule = (obj) => {
-    this._rule = { ...this._rule, ...obj };
-  };
-
-  toggle = () => {
-    if (this._rule.transOpen) {
-      this._rule.transOpen = false;
-      this._unRegister();
-    } else {
-      this._rule.transOpen = true;
-      this._register();
-    }
-  };
-
-  _register = () => {
-    // 监听节点变化
-    this._mutaObserver.observe(document, {
-      childList: true,
-      subtree: true,
-    });
-
-    // 监听节点显示
-    queryEls(this._rule.selector).forEach((el) => {
-      this._interseObserver.observe(el);
-    });
-  };
-
-  _unRegister = () => {
-    // 解除节点变化监听
-    this._mutaObserver.disconnect();
-
-    // 解除节点显示监听
-    queryEls(this._rule.selector).forEach((el) =>
-      this._interseObserver.unobserve(el)
-    );
-
-    // 移除已插入元素
-    queryEls(APP_LCNAME).forEach((el) => el.remove());
-  };
-
-  _render = (el) => {
-    if (el.querySelector(APP_LCNAME)) {
-      return;
-    }
-
-    // 除openai外，保留code和a标签
-    const q = el.innerText.trim();
-    if (!q || q.length < TRANS_MIN_LENGTH || q.length > TRANS_MAX_LENGTH) {
-      // 太长或太短不翻译
-      return;
-    }
-
-    // console.log("---> ", q);
-
-    const span = document.createElement(APP_LCNAME);
-    el.appendChild(span);
-
-    const root = createRoot(span);
-    root.render(
-      <StoragesProvider>
-        <Content q={q} rule={this._rule} />
-      </StoragesProvider>
-    );
-  };
-}
+import { Translator } from "./libs/translator";
 
 /**
  * 入口函数
diff --git a/src/libs/auth.js b/src/libs/auth.js
index bfc7725..303590c 100644
--- a/src/libs/auth.js
+++ b/src/libs/auth.js
@@ -2,7 +2,14 @@ import storage from "./storage";
 import { STOKEY_MSAUTH, URL_MICROSOFT_AUTH } from "../config";
 import { fetchPolyfill } from "./fetch";
 
-const parseMSToken = (token) => JSON.parse(atob(token.split(".")[1])).exp;
+const parseMSToken = (token) => {
+  try {
+    return JSON.parse(atob(token.split(".")[1])).exp;
+  } catch (err) {
+    console.log("[parseMSToken]", err);
+  }
+  return 0;
+};
 
 /**
  * 闭包缓存token，减少对storage查询
diff --git a/src/libs/fetch.js b/src/libs/fetch.js
index 4d6129d..1e85257 100644
--- a/src/libs/fetch.js
+++ b/src/libs/fetch.js
@@ -13,20 +13,29 @@ import {
  * @param {*} init
  * @returns
  */
-const fetchGM = async (input, { method, headers, body }) =>
+const fetchGM = async (input, { method = "GET", headers, body } = {}) =>
   new Promise((resolve, reject) => {
     try {
-      window.GM.xmlhttpRequest({
+      window.GM_xmlhttpRequest({
         method,
         url: input,
         headers,
         data: body,
         onload: (response) => {
-          resolve(new Response(response.response));
-        },
-        onerror: (error) => {
-          reject(error);
+          if (response.status === 200) {
+            const headers = new Headers();
+            response.responseHeaders.split("\n").forEach((line) => {
+              let [name, value] = line.split(":").map((item) => item.trim());
+              if (name && value) {
+                headers.append(name, value);
+              }
+            });
+            resolve(new Response(response.response, { headers }));
+          } else {
+            reject(new Error(`[${response.status}] ${response.responseText}`));
+          }
         },
+        onerror: reject,
       });
     } catch (error) {
       reject(error);
diff --git a/src/libs/storage.js b/src/libs/storage.js
index 0531bd8..5a63e5d 100644
--- a/src/libs/storage.js
+++ b/src/libs/storage.js
@@ -21,11 +21,11 @@ async function set(key, val) {
 
 async function get(key) {
   if (isExt) {
-    const res = await browser.storage.local.get([key]);
-    return res[key];
+    const val = await browser.storage.local.get([key]);
+    return val[key];
   } else if (isGm) {
-    const res = await window.GM.getValue(key);
-    return res;
+    const val = await window.GM.getValue(key);
+    return val;
   }
   return window.localStorage.getItem(key);
 }
diff --git a/src/libs/translator.js b/src/libs/translator.js
new file mode 100644
index 0000000..ed61249
--- /dev/null
+++ b/src/libs/translator.js
@@ -0,0 +1,116 @@
+import { createRoot } from "react-dom/client";
+import { APP_LCNAME, TRANS_MIN_LENGTH, TRANS_MAX_LENGTH } from "../config";
+import { StoragesProvider } from "../hooks/Storage";
+import { queryEls } from ".";
+import Content from "../views/Content";
+
+/**
+ * 翻译类
+ */
+export class Translator {
+  _rule = {};
+
+  _interseObserver = new IntersectionObserver(
+    (intersections) => {
+      intersections.forEach((intersection) => {
+        if (intersection.isIntersecting) {
+          this._render(intersection.target);
+          this._interseObserver.unobserve(intersection.target);
+        }
+      });
+    },
+    {
+      threshold: 0.1,
+    }
+  );
+
+  _mutaObserver = new MutationObserver((mutations) => {
+    mutations.forEach((mutation) => {
+      mutation.addedNodes.forEach((node) => {
+        try {
+          queryEls(this._rule.selector, node).forEach((el) => {
+            this._interseObserver.observe(el);
+          });
+        } catch (err) {
+          //
+        }
+      });
+    });
+  });
+
+  constructor(rule) {
+    this._rule = rule;
+    if (rule.transOpen) {
+      this._register();
+    }
+  }
+
+  get rule() {
+    return this._rule;
+  }
+
+  updateRule = (obj) => {
+    this._rule = { ...this._rule, ...obj };
+  };
+
+  toggle = () => {
+    if (this._rule.transOpen) {
+      this._rule.transOpen = false;
+      this._unRegister();
+    } else {
+      this._rule.transOpen = true;
+      this._register();
+    }
+  };
+
+  _register = () => {
+    // 监听节点变化
+    this._mutaObserver.observe(document, {
+      childList: true,
+      subtree: true,
+    });
+
+    // 监听节点显示
+    queryEls(this._rule.selector).forEach((el) => {
+      this._interseObserver.observe(el);
+    });
+  };
+
+  _unRegister = () => {
+    // 解除节点变化监听
+    this._mutaObserver.disconnect();
+
+    // 解除节点显示监听
+    queryEls(this._rule.selector).forEach((el) =>
+      this._interseObserver.unobserve(el)
+    );
+
+    // 移除已插入元素
+    queryEls(APP_LCNAME).forEach((el) => el.remove());
+  };
+
+  _render = (el) => {
+    if (el.querySelector(APP_LCNAME)) {
+      return;
+    }
+
+    // 除openai外，保留code和a标签
+    const q = el.innerText.trim();
+    if (!q || q.length < TRANS_MIN_LENGTH || q.length > TRANS_MAX_LENGTH) {
+      // 太长或太短不翻译
+      return;
+    }
+
+    // console.log("---> ", q);
+
+    const span = document.createElement(APP_LCNAME);
+    el.appendChild(span);
+
+    const root = createRoot(span);
+    root.render(
+      <StoragesProvider>
+        <Content q={q} rule={this._rule} />
+      </StoragesProvider>
+    );
+  };
+}
diff --git a/src/userscript.js b/src/userscript.js
new file mode 100644
index 0000000..444b217
--- /dev/null
+++ b/src/userscript.js
@@ -0,0 +1,39 @@
+import { browser } from "./libs/browser";
+import {
+  MSG_TRANS_TOGGLE,
+  MSG_TRANS_GETRULE,
+  MSG_TRANS_PUTRULE,
+} from "./config";
+import { getRules, matchRule } from "./libs";
+import { getSetting } from "./libs";
+import { transPool } from "./libs/pool";
+import { Translator } from "./libs/translator";
+
+/**
+ * 入口函数
+ */
+(async () => {
+  const { fetchInterval, fetchLimit } = await getSetting();
+  transPool.update(fetchInterval, fetchLimit);
+
+  const rules = await getRules();
+  const rule = matchRule(rules, document.location.href);
+  const translator = new Translator(rule);
+
+  // 监听消息
+  browser?.runtime.onMessage.addListener(async ({ action, args }) => {
+    switch (action) {
+      case MSG_TRANS_TOGGLE:
+        translator.toggle();
+        break;
+      case MSG_TRANS_GETRULE:
+        break;
+      case MSG_TRANS_PUTRULE:
+        translator.updateRule(args);
+        break;
+      default:
+        return { error: `message action is unavailable: ${action}` };
+    }
+    return { data: translator.rule };
+  });
+})();