diff --git a/package.json b/package.json
index 81e7805bf..81df75625 100644
--- a/package.json
+++ b/package.json
@@ -28,15 +28,15 @@
     "license": "AGPL-3.0-only",
     "devDependencies": {
         "@types/cross-spawn": "^6.0.2",
-        "@types/node": "^16.11.21",
+        "@types/node": "^16.11.22",
         "@types/semver": "^7.3.9",
-        "@typescript-eslint/eslint-plugin": "5.10.0",
-        "@typescript-eslint/parser": "5.10.0",
+        "@typescript-eslint/eslint-plugin": "5.10.2",
+        "@typescript-eslint/parser": "5.10.2",
         "cac": "^6.7.12",
         "cross-env": "^7.0.3",
         "cross-spawn": "^7.0.3",
         "esbuild": "0.14.3",
-        "eslint": "^8.7.0",
+        "eslint": "^8.8.0",
         "eslint-config-airbnb-typescript": "12.3.1",
         "eslint-import-resolver-typescript": "2.5.0",
         "eslint-plugin-import": "2.25.4",
diff --git a/packages/ui-default/build/config/webpack.js b/packages/ui-default/build/config/webpack.js
index 8746d5222..a3fe4cec8 100644
--- a/packages/ui-default/build/config/webpack.js
+++ b/packages/ui-default/build/config/webpack.js
@@ -199,6 +199,7 @@ export default function (env = {}) {
           { from: root('static') },
           { from: root(`${dirname(require.resolve('vditor/package.json'))}`), to: 'vditor/' },
           { from: `${dirname(require.resolve('monaco-themes/package.json'))}/themes`, to: 'monaco/themes/' },
+          { from: root('.build/sharedworker.js'), to: 'sharedworker.js' },
         ],
       }),
       new webpack.DefinePlugin({
diff --git a/packages/ui-default/build/main.js b/packages/ui-default/build/main.js
index 51172d68c..62a123d28 100644
--- a/packages/ui-default/build/main.js
+++ b/packages/ui-default/build/main.js
@@ -2,6 +2,7 @@
 import cac from 'cac';
 import fs from 'fs-extra';
 import webpack from 'webpack';
+import esbuild from 'esbuild';
 import WebpackDevServer from 'webpack-dev-server';
 import gulp from 'gulp';
 import log from 'fancy-log';
@@ -13,9 +14,18 @@ import webpackConfig from './config/webpack';
 
 const argv = cac().parse();
 
-function runWebpack({
+async function runWebpack({
   watch, production, measure, dev,
 }) {
+  const result = esbuild.build({
+    bundle: true,
+    format: 'iife',
+    entryPoints: [root('sharedworker.ts')],
+    outfile: root('.build/sharedworker.js'),
+    watch: dev || watch,
+    minify: production,
+  });
+  if (!dev && !watch) await result;
   const compiler = webpack(webpackConfig({ watch, production, measure }));
   if (dev) {
     const server = new WebpackDevServer(compiler, {
@@ -23,9 +33,9 @@ function runWebpack({
       hot: true,
       disableHostCheck: true,
       stats: 'none',
-      index: '',
+      index: root('public'),
       proxy: {
-        context: () => true,
+        context: (path) => !path.includes('sharedworker.js'),
         target: 'http://localhost:2333',
         ws: true,
       },
diff --git a/packages/ui-default/components/message/index.page.js b/packages/ui-default/components/message/index.page.js
index 25e05b3f3..337f97487 100644
--- a/packages/ui-default/components/message/index.page.js
+++ b/packages/ui-default/components/message/index.page.js
@@ -26,7 +26,7 @@ const messagePage = new AutoloadPage('messagePage', (pagename) => {
 
     const { default: SockJs } = await import('../socket');
 
-    const sock = new SockJs('/home/messages-conn');
+    const sock = new SockJs('/home/messages-conn', true, true);
     sock.onmessage = (message) => {
       const msg = JSON.parse(message.data);
       console.log('Received message', msg);
diff --git a/packages/ui-default/components/socket/index.js b/packages/ui-default/components/socket/index.js
index e7066699c..f752ee326 100644
--- a/packages/ui-default/components/socket/index.js
+++ b/packages/ui-default/components/socket/index.js
@@ -20,11 +20,13 @@ function remove() {
 }
 
 export default class Sock {
-  constructor(url, showNotification = true) {
+  constructor(url, showNotification = true, useShared = false) {
     this.url = url;
+    this.shared = false;
     this.isreconnect = false;
     this.retryCount = 0;
-    this.init();
+    if (useShared && window.SharedWorker) this.initShared();
+    else this.init();
     this.showNotification = showNotification;
   }
 
@@ -60,12 +62,25 @@ export default class Sock {
     };
   }
 
+  initShared() {
+    this.shared = true;
+    const worker = new SharedWorker('/sharedworker.js', { name: 'Hydro Shared Connections Worker' });
+    worker.port.start();
+    const path = `${new URL(this.url, window.location.href).href.replace('http', 'ws')}/websocket`;
+    worker.port.postMessage({ type: 'sharedConn', path, cookie: document.cookie });
+    worker.port.onmessage = (e) => {
+      if (e.data.type === 'message') this.onmessage({ data: e.data.payload });
+    };
+    this.worker = worker;
+  }
+
   send(data) {
-    this.sock.send(data);
+    if (this.shared) this.worker.port.postMessage({ type: 'message', path: this.url, payload: data });
+    else this.sock.send(data);
   }
 
   close() {
     this.closed = true;
-    this.sock.close();
+    if (!this.shared) this.sock.close();
   }
 }
diff --git a/packages/ui-default/jsconfig.json b/packages/ui-default/jsconfig.json
index d7c8c7925..8280895e7 100644
--- a/packages/ui-default/jsconfig.json
+++ b/packages/ui-default/jsconfig.json
@@ -8,6 +8,9 @@
     "allowSyntheticDefaultImports": true,
     "target": "ES2020",
     "baseUrl": ".",
+    "lib": [
+      "ES2020"
+    ],
     "moduleResolution": "node",
     "paths": {
       "vj/*": [
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 2ed4f35bc..290cfecfc 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.30.11",
+  "version": "4.31.0",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
@@ -18,6 +18,7 @@
     "@types/katex": "^0.11.1",
     "@types/qrcode": "^1.4.2",
     "@types/redux-logger": "^3.0.9",
+    "@types/sharedworker": "^0.0.64",
     "@types/sockjs-client": "^1.5.1",
     "@undefined-moe/monaco-yaml": "^2.5.1",
     "ansi_up": "^5.1.0",
@@ -74,6 +75,7 @@
     "react-dom": "^17.0.2",
     "react-redux": "^7.2.6",
     "react-split-pane": "^0.1.92",
+    "reconnecting-websocket": "^4.4.0",
     "redux": "^4.1.2",
     "redux-logger": "^3.0.6",
     "redux-promise-middleware": "^6.1.2",
diff --git a/packages/ui-default/sharedworker.ts b/packages/ui-default/sharedworker.ts
new file mode 100644
index 000000000..5f025e4a3
--- /dev/null
+++ b/packages/ui-default/sharedworker.ts
@@ -0,0 +1,58 @@
+import ReconnectingWebsocket from 'reconnecting-websocket';
+
+console.log('SharedWorker init');
+
+const sharedConnections: Record<string, [ReconnectingWebsocket, MessagePort[]]> = {};
+interface RequestInitSharedConnPayload {
+  type: 'sharedConn';
+  cookie: any;
+  path: string;
+}
+interface RequestSendMessagePayload {
+  type: 'message';
+  path: string;
+  payload: string;
+}
+type RequestPayload = RequestInitSharedConnPayload | RequestSendMessagePayload;
+
+function broadcastMsg(ports: MessagePort[], message: any) {
+  for (const p of ports) p.postMessage(message);
+}
+function initSharedConn(path: string, port: MessagePort, cookie: any) {
+  if (!sharedConnections[path]) {
+    console.log('Init connection for', path);
+    const sock = new ReconnectingWebsocket(path);
+    const ports: MessagePort[] = [];
+    sharedConnections[path] = [sock, ports];
+
+    sock.onopen = () => sock.send(cookie);
+    sock.onmessage = (message) => {
+      if (process.env.NODE_ENV !== 'production') console.log('SharedWorker.port.onmessage: ', message);
+      const payload = JSON.parse(message.data);
+      if (payload.event === 'auth') {
+        if (['PermissionError', 'PrivilegeError'].includes(payload.error)) {
+          broadcastMsg(ports, { type: 'close', path, error: payload.error });
+        } else {
+          console.log('Connected to', path);
+          broadcastMsg(ports, { type: 'open', path });
+        }
+      } else broadcastMsg(ports, { type: 'message', path, payload: message.data });
+    };
+    sock.onerror = () => broadcastMsg(ports, { type: 'error', path });
+    sock.onclose = (ev) => broadcastMsg(ports, { type: 'close', path, error: ev.reason });
+  }
+
+  sharedConnections[path][1].push(port);
+}
+
+// eslint-disable-next-line no-undef
+onconnect = function (e) {
+  const port = e.ports[0];
+
+  port.addEventListener('message', (msg: { data: RequestPayload }) => {
+    if (msg.data.type === 'sharedConn') initSharedConn(msg.data.path, port, msg.data.cookie);
+    if (msg.data.type === 'message') sharedConnections[msg.data.path]?.[0].send(msg.data.payload);
+  });
+
+  port.start();
+};