Browser page
  -> fetch Meeting SDK signature from backend
  -> ZoomMtgEmbedded.createClient()
  -> client.init({ zoomAppRoot })
  -> client.join({ signature, sdkKey, meetingNumber, userName, password })
  -> apply layout/style/customize options around the embedded meeting container

import ZoomMtgEmbedded from '@zoom/meetingsdk/embedded';

const client = ZoomMtgEmbedded.createClient();

export async function startEmbeddedMeeting(meetingNumber: string, userName: string, password: string) {
  const sigRes = await fetch('/api/signature', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ meetingNumber, role: 0 }),
  });

  if (!sigRes.ok) throw new Error(`signature_fetch_failed:${sigRes.status}`);

  const { signature, sdkKey } = await sigRes.json();

  await client.init({
    zoomAppRoot: document.getElementById('meetingSDKElement')!,
    language: 'en-US',
    patchJsMedia: true,
    leaveOnPageUnload: true,
    customize: {
      video: { isResizable: true, popper: { disableDraggable: false } },
    },
  });

  await client.join({
    signature,
    sdkKey,
    meetingNumber,
    userName,
    password,
  });
}

# Clone Zoom's official auth endpoint
git clone https://github.com/zoom/meetingsdk-auth-endpoint-sample --depth 1
cd meetingsdk-auth-endpoint-sample
cp .env.example .env
# Edit .env with your SDK Key and Secret
npm install && npm run start

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Get Signature │───►│   init()        │───►│   join()        │
│   (from backend)│    │   (SDK setup)   │    │   (enter mtg)   │
└─────────────────┘    └─────────────────┘    └─────────────────┘
                              │                       │
                              ▼                       ▼
                       success/error            success/error
                        callback                 callback
                     (or Promise resolve)    (or Promise resolve)

ZoomMtg.init({
  // Required
  leaveUrl: string,              // URL to redirect after leaving

  // Display Options
  showMeetingHeader: boolean,    // Show meeting number/topic (default: true)
  disableInvite: boolean,        // Hide invite button (default: false)
  disableRecord: boolean,        // Hide record button (default: false)
  disableJoinAudio: boolean,     // Hide join audio option (default: false)
  disablePreview: boolean,       // Skip A/V preview (default: false)
  
  // HD Video (requires SharedArrayBuffer)
  enableHD: boolean,             // Enable 720p (default: true for >=2.8.0)
  enableFullHD: boolean,         // Enable 1080p for webinars (default: false)
  
  // View Options
  defaultView: 'gallery' | 'speaker' | 'multiSpeaker',
  
  // Feature Toggles
  isSupportChat: boolean,        // Enable chat (default: true)
  isSupportCC: boolean,          // Enable closed captions (default: true)
  isSupportBreakout: boolean,    // Enable breakout rooms (default: true)
  isSupportPolling: boolean,     // Enable polling (default: true)
  isSupportQA: boolean,          // Enable Q&A for webinars (default: true)
  
  // Cross-Origin
  disableCORP: boolean,          // For dev without COOP/COEP headers
  
  // Callbacks
  success: Function,
  error: Function,
});

ZoomMtg.join({
  // Required
  signature: string,             // JWT signature from backend
  meetingNumber: string | number,
  userName: string,
  
  // Authentication
  passWord: string,              // Meeting password (capital W!)
  zak: string,                   // Host's ZAK token (required to start)
  tk: string,                    // Registration token (if required)
  obfToken: string,              // App Privilege Token (for 2026 requirement)
  
  // Optional
  userEmail: string,             // Required for webinars
  customerKey: string,           // Custom identifier (max 36 chars)
  
  // Callbacks
  success: Function,
  error: Function,
});

// User events
ZoomMtg.inMeetingServiceListener('onUserJoin', (data) => {
  console.log('User joined:', data);
});

ZoomMtg.inMeetingServiceListener('onUserLeave', (data) => {
  console.log('User left:', data);
  // data.reasonCode values:
  // 0: OTHER
  // 1: HOST_ENDED_MEETING
  // 2: SELF_LEAVE_FROM_IN_MEETING
  // 3: SELF_LEAVE_FROM_WAITING_ROOM
  // 4: SELF_LEAVE_FROM_WAITING_FOR_HOST_START
  // 5: MEETING_TRANSFER
  // 6: KICK_OUT_FROM_MEETING
  // 7: KICK_OUT_FROM_WAITING_ROOM
  // 8: LEAVE_FROM_DISCLAIMER
});

ZoomMtg.inMeetingServiceListener('onUserUpdate', (data) => {
  console.log('User updated:', data);
});

// Meeting status
ZoomMtg.inMeetingServiceListener('onMeetingStatus', (data) => {
  // status: 1=connecting, 2=connected, 3=disconnected, 4=reconnecting
  console.log('Meeting status:', data.status);
});

// Waiting room
ZoomMtg.inMeetingServiceListener('onUserIsInWaitingRoom', (data) => {
  console.log('User in waiting room:', data);
});

// Active speaker detection
ZoomMtg.inMeetingServiceListener('onActiveSpeaker', (data) => {
  // [{userId: number, userName: string}]
  console.log('Active speaker:', data);
});

// Network quality monitoring
ZoomMtg.inMeetingServiceListener('onNetworkQualityChange', (data) => {
  // {level: 0-5, userId, type: 'uplink'}
  // 0-1 = bad, 2 = normal, 3-5 = good
  if (data.level <= 1) {
    console.warn('Poor network quality');
  }
});

// Join performance metrics
ZoomMtg.inMeetingServiceListener('onJoinSpeed', (data) => {
  console.log('Join speed metrics:', data);
  // Useful for performance monitoring dashboards
});

// Chat
ZoomMtg.inMeetingServiceListener('onReceiveChatMsg', (data) => {
  console.log('Chat message:', data);
});

// Recording
ZoomMtg.inMeetingServiceListener('onRecordingChange', (data) => {
  console.log('Recording status:', data);
});

// Screen sharing
ZoomMtg.inMeetingServiceListener('onShareContentChange', (data) => {
  console.log('Share content changed:', data);
});

// Transcription (requires "save closed captions" enabled)
ZoomMtg.inMeetingServiceListener('onReceiveTranscriptionMsg', (data) => {
  console.log('Transcription:', data);
});

// Breakout room status
ZoomMtg.inMeetingServiceListener('onRoomStatusChange', (data) => {
  // status: 2=InProgress, 3=Closing, 4=Closed
  console.log('Breakout room status:', data);
});

// Get current user info
ZoomMtg.getCurrentUser({
  success: (res) => console.log(res.result.currentUser)
});

// Get all attendees
ZoomMtg.getAttendeeslist({});

// Audio/Video control
ZoomMtg.mute({ userId, mute: true });
ZoomMtg.muteAll({ muteAll: true });

// Chat
ZoomMtg.sendChat({ message: 'Hello!', userId: 0 }); // 0 = everyone

// Leave/End
ZoomMtg.leaveMeeting({});
ZoomMtg.endMeeting({});

// Host controls
ZoomMtg.makeHost({ userId });
ZoomMtg.makeCoHost({ oderId });
ZoomMtg.expel({ userId });  // Remove participant
ZoomMtg.putOnHold({ oderId, bHold: true });

// Breakout rooms
ZoomMtg.createBreakoutRoom({ rooms: [...] });
ZoomMtg.openBreakoutRooms({});
ZoomMtg.closeBreakoutRooms({});

// Virtual background
ZoomMtg.setVirtualBackground({ imageUrl: '...' });

await client.init({
  // Required
  zoomAppRoot: HTMLElement,      // Container element

  // Display
  language: string,              // e.g., 'en-US'
  debug: boolean,                // Enable debug logging (default: false)
  
  // Media
  patchJsMedia: boolean,         // Auto-apply media fixes (default: false)
  leaveOnPageUnload: boolean,    // Clean up on page unload (default: false)
  
  // Video
  enableHD: boolean,             // Enable 720p
  enableFullHD: boolean,         // Enable 1080p
  
  // Customization
  customize: {
    video: {
      isResizable: boolean,
      viewSizes: { default: { width, height } }
    },
    meetingInfo: ['topic', 'host', 'mn', 'pwd', 'telPwd', 'invite', 'participant', 'dc', 'enctype'],
    toolbar: {
      buttons: [
        {
          text: 'Custom Button',
          className: 'custom-btn',
          onClick: () => {
            console.log('Custom button clicked');
          }
        }
      ]
    }
  },
  
  // For ZFG
  webEndpoint: string,
  assetPath: string,             // Custom path for AV libraries (self-hosting)
});

await client.join({
  // Required
  signature: string,
  sdkKey: string,
  meetingNumber: string | number,
  userName: string,
  
  // Authentication  
  password: string,              // Lowercase! (different from Client View)
  zak: string,                   // Host's ZAK token
  tk: string,                    // Registration token
  
  // Optional
  userEmail: string,
});

// Connection state
client.on('connection-change', (payload) => {
  // payload.state: 'Connecting', 'Connected', 'Reconnecting', 'Closed'
  console.log('Connection:', payload.state);
});

// User events
client.on('user-added', (payload) => {
  console.log('Users added:', payload);
});

client.on('user-removed', (payload) => {
  console.log('Users removed:', payload);
});

client.on('user-updated', (payload) => {
  console.log('Users updated:', payload);
});

// Active speaker
client.on('active-speaker', (payload) => {
  console.log('Active speaker:', payload);
});

// Video state
client.on('video-active-change', (payload) => {
  console.log('Video active:', payload);
});

// Unsubscribe
client.off('connection-change', handler);

// Get current user
const currentUser = client.getCurrentUser();

// Get all participants
const participants = client.getParticipantsList();

// Audio control
await client.mute(true);
await client.muteAudio(userId, true);

// Video control
await client.muteVideo(userId, true);

// Leave
client.leaveMeeting();

// End (host only)
client.endMeeting();

Cross-Origin-Opener-Policy: same-origin
Cross-Origin-Embedder-Policy: require-corp

if (typeof SharedArrayBuffer === 'function') {
  console.log('SharedArrayBuffer enabled!');
} else {
  console.warn('HD features will be limited');
}

// Or check cross-origin isolation
console.log('Cross-origin isolated:', window.crossOriginIsolated);

// Server 1: Main app (port 9999) - NO isolation headers
// Serves index.html, navigation works normally

// Server 2: Meeting page (port 9998) - WITH isolation headers
// Serves meeting.html with SharedArrayBuffer support

// Main server proxies to meeting server
proxy: [{
  path: '/meeting.html',
  target: 'http://YOUR_MEETING_SERVER_HOST:9998/'
}]

// vite.config.ts
export default defineConfig({
  server: {
    headers: {
      'Cross-Origin-Embedder-Policy': 'require-corp',
      'Cross-Origin-Opener-Policy': 'same-origin',
    }
  }
});

{
  "dependencies": {
    "@zoom/meetingsdk": "3.11.2-zfg"
  }
}

ZoomMtg.setZoomJSLib('https://source.zoomgov.com/{VERSION}/lib', '/av');
ZoomMtg.init({
  webEndpoint: 'www.zoomgov.com',
  ...
});

await client.init({
  webEndpoint: 'www.zoomgov.com',
  assetPath: 'https://source.zoomgov.com/{VERSION}/lib/av',
  ...
});

// Set before preLoadWasm()
ZoomMtg.setZoomJSLib('https://jssdk.zoomus.cn/{VERSION}/lib', '/av');

import { ZoomMtg } from '@zoom/meetingsdk';

// Preload at module level (outside component)
ZoomMtg.preLoadWasm();
ZoomMtg.prepareWebSDK();

function App() {
  const authEndpoint = import.meta.env.VITE_AUTH_ENDPOINT;
  const meetingNumber = '';
  const passWord = '';
  const role = 0;
  const userName = 'React User';

  const getSignature = async () => {
    const response = await fetch(authEndpoint, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        meetingNumber,
        role,
      }),
    });
    const data = await response.json();
    startMeeting(data.signature);
  };

  const startMeeting = (signature: string) => {
    document.getElementById('zmmtg-root')!.style.display = 'block';

    ZoomMtg.init({
      leaveUrl: window.location.origin,
      patchJsMedia: true,
      leaveOnPageUnload: true,
      success: () => {
        ZoomMtg.join({
          signature,
          meetingNumber,
          userName,
          passWord,
          success: (res) => console.log('Joined:', res),
          error: (err) => console.error('Join error:', err),
        });
      },
      error: (err) => console.error('Init error:', err),
    });
  };

  return (
    <button onClick={getSignature}>Join Meeting</button>
  );
}

import { useEffect, useRef, useState, useCallback } from 'react';
import ZoomMtgEmbedded from '@zoom/meetingsdk/embedded';

type ZoomClient = ReturnType<typeof ZoomMtgEmbedded.createClient>;

function ZoomMeeting({ meetingNumber, password, userName }: Props) {
  const clientRef = useRef<ZoomClient | null>(null);
  const containerRef = useRef<HTMLDivElement>(null);
  const [isJoining, setIsJoining] = useState(false);
  const [error, setError] = useState<string | null>(null);

  // Create client once
  useEffect(() => {
    if (!clientRef.current) {
      clientRef.current = ZoomMtgEmbedded.createClient();
    }
  }, []);

  const joinMeeting = useCallback(async () => {
    if (!clientRef.current || !containerRef.current) return;
    
    setIsJoining(true);
    setError(null);

    try {
      // Get signature from your backend
      const response = await fetch('/api/signature', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ meetingNumber, role: 0 }),
      });
      const { signature, sdkKey } = await response.json();
      
      await clientRef.current.init({
        zoomAppRoot: containerRef.current,
        language: 'en-US',
        patchJsMedia: true,
        leaveOnPageUnload: true,
      });

      await clientRef.current.join({
        signature,
        sdkKey,
        meetingNumber,
        password,
        userName,
      });
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Failed to join');
    } finally {
      setIsJoining(false);
    }
  }, [meetingNumber, password, userName]);

  return (
    <div>
      <div ref={containerRef} style={{ width: '100%', height: '500px' }} />
      <button onClick={joinMeeting} disabled={isJoining}>
        {isJoining ? 'Joining...' : 'Join Meeting'}
      </button>
      {error && <div className="error">{error}</div>}
    </div>
  );
}

# .env.local
VITE_AUTH_ENDPOINT=http://YOUR_AUTH_SERVER_HOST:4000
VITE_SDK_KEY=your_sdk_key

const authEndpoint = import.meta.env.VITE_AUTH_ENDPOINT;
const sdkKey = import.meta.env.VITE_SDK_KEY;

// Users can paste full Zoom invite links
document.getElementById('meeting_number').addEventListener('input', (e) => {
  // Extract meeting number (9-11 digits)
  let meetingNumber = e.target.value.replace(/([^0-9])+/i, '');
  if (meetingNumber.match(/([0-9]{9,11})/)) {
    meetingNumber = meetingNumber.match(/([0-9]{9,11})/)[1];
  }
  
  // Auto-extract password from invite link
  const pwdMatch = e.target.value.match(/pwd=([\d,\w]+)/);
  if (pwdMatch) {
    document.getElementById('password').value = pwdMatch[1];
  }
});

// Change language at runtime
document.getElementById('language').addEventListener('change', (e) => {
  const lang = e.target.value;
  ZoomMtg.i18n.load(lang);
  ZoomMtg.i18n.reload(lang);
  ZoomMtg.reRender({ lang });
});

// Check browser compatibility before initializing
const requirements = ZoomMtg.checkSystemRequirements();
console.log('Browser info:', JSON.stringify(requirements));

if (!requirements.browserInfo.isChrome && !requirements.browserInfo.isFirefox) {
  alert('For best experience, use Chrome or Firefox');
}

npm install @zoom/meetingsdk --save

<!-- Dependencies (required for both views) -->
<script src="https://source.zoom.us/{VERSION}/lib/vendor/react.min.js"></script>
<script src="https://source.zoom.us/{VERSION}/lib/vendor/react-dom.min.js"></script>
<script src="https://source.zoom.us/{VERSION}/lib/vendor/redux.min.js"></script>
<script src="https://source.zoom.us/{VERSION}/lib/vendor/redux-thunk.min.js"></script>
<script src="https://source.zoom.us/{VERSION}/lib/vendor/lodash.min.js"></script>

<!-- Client View -->
<script src="https://source.zoom.us/zoom-meeting-{VERSION}.min.js"></script>

<!-- OR Component View -->
<script src="https://source.zoom.us/zoom-meeting-embedded-{VERSION}.min.js"></script>

import { ZoomMtg } from '@zoom/meetingsdk';

// Step 1: Check browser compatibility
console.log('System requirements:', ZoomMtg.checkSystemRequirements());

// Step 2: Preload WebAssembly for faster initialization
ZoomMtg.preLoadWasm();
ZoomMtg.prepareWebSDK();

// Step 3: Load language files (MUST complete before init)
ZoomMtg.i18n.load('en-US');
ZoomMtg.i18n.onLoad(() => {
  
  // Step 4: Initialize SDK
  ZoomMtg.init({
    leaveUrl: 'https://yoursite.com/meeting-ended',
    disableCORP: !window.crossOriginIsolated, // Auto-detect SharedArrayBuffer
    patchJsMedia: true,           // Auto-apply media dependency fixes
    leaveOnPageUnload: true,      // Clean up when page unloads
    externalLinkPage: './external.html', // Page for external links
    success: () => {
      
      // Step 5: Join meeting (note: passWord with capital W!)
      ZoomMtg.join({
        signature: signature,       // From your auth endpoint
        meetingNumber: '1234567890',
        userName: 'User Name',
        passWord: 'meeting-password', // Capital W!
        success: (res) => {
          console.log('Joined meeting:', res);
          
          // Post-join: Get meeting info
          ZoomMtg.getAttendeeslist({});
          ZoomMtg.getCurrentUser({
            success: (res) => console.log('Current user:', res.result.currentUser)
          });
        },
        error: (err) => {
          console.error('Join error:', err);
        }
      });
    },
    error: (err) => {
      console.error('Init error:', err);
    }
  });
});

import ZoomMtgEmbedded from '@zoom/meetingsdk/embedded';

// Create client instance (do this ONCE, not on every render!)
const client = ZoomMtgEmbedded.createClient();

async function startMeeting() {
  try {
    // Initialize with container element
    await client.init({
      zoomAppRoot: document.getElementById('meetingSDKElement'),
      language: 'en-US',
      debug: true,                  // Enable debug logging
      patchJsMedia: true,           // Auto-apply media fixes
      leaveOnPageUnload: true,      // Clean up on page unload
    });

    // Join meeting (note: password lowercase!)
    await client.join({
      signature: signature,          // From your auth endpoint
      sdkKey: SDK_KEY,
      meetingNumber: '1234567890',
      userName: 'User Name',
      password: 'meeting-password',  // Lowercase!
    });
    
    console.log('Joined successfully!');
  } catch (error) {
    console.error('Failed to join:', error);
  }
}