Zoom Meeting SDK Web - Client View

Full-page Zoom meeting experience embedded in your web application. Client View provides the familiar Zoom interface with minimal customization needed.

Overview

Client View uses the ZoomMtg global singleton to render a full-page meeting experience identical to the Zoom Web Client.

Aspect	Details
API Object	ZoomMtg (global singleton)
API Style	Callback-based
UI	Full-page takeover
Password param	passWord (capital W)
Events	inMeetingServiceListener()
Best For	Quick integration, standard Zoom UI

Installation

NPM

npm install @zoom/meetingsdk --save

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

CDN

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

Complete Initialization Flow

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

// Step 2: Set CDN path (optional - for China or custom hosting)
// ZoomMtg.setZoomJSLib('https://source.zoom.us/{VERSION}/lib', '/av');

// Step 3: Preload WebAssembly modules
ZoomMtg.preLoadWasm();
ZoomMtg.prepareWebSDK();

// Step 4: Load language resources
ZoomMtg.i18n.load('en-US');
ZoomMtg.i18n.onLoad(() => {

  // Step 5: Initialize SDK
  ZoomMtg.init({
    leaveUrl: '/meeting-ended',
    patchJsMedia: true,
    disableCORP: !window.crossOriginIsolated,
    success: () => {
      console.log('SDK initialized');

      // Step 6: Join meeting
      const joinPayload = {
        signature: signature,
        meetingNumber: meetingNumber,
        userName: userName,
        passWord: passWord,
        success: (res) => {
          console.log('Joined meeting');

          // Step 7: Post-join operations
          ZoomMtg.getAttendeeslist({});
          ZoomMtg.getCurrentUser({
            success: (res) => console.log('Current user:', res.result.currentUser)
          });
        },
        error: (err) => console.error('Join failed:', err)
      };

      // IMPORTANT: only include optional fields when they have real values
      // Passing undefined for some optional fields can cause runtime join errors
      if (userEmail) joinPayload.userEmail = userEmail;
      if (tk) joinPayload.tk = tk;
      if (zak) joinPayload.zak = zak;

      ZoomMtg.join(joinPayload);
    },
    error: (err) => console.error('Init failed:', err)
  });
});

ZoomMtg.init() - All Options

Required

Parameter	Type	Description
leaveUrl	string	URL to redirect after leaving meeting

UI Customization

Parameter	Type	Default	Description
showMeetingHeader	boolean	true	Show meeting number and topic
disableInvite	boolean	false	Hide invite button
disableCallOut	boolean	false	Hide call out option
disableRecord	boolean	false	Hide record button
disableJoinAudio	boolean	false	Hide join audio option
disablePreview	boolean	false	Skip audio/video preview
audioPanelAlwaysOpen	boolean	false	Keep audio panel open
showPureSharingContent	boolean	false	Prevent overlays on shared content
videoHeader	boolean	true	Show video tile header
isLockBottom	boolean	true	Show/hide footer
videoDrag	boolean	true	Enable drag video tiles
sharingMode	string	'both'	'both' or 'fit'
screenShare	boolean	true	Enable browser URL sharing
hideShareAudioOption	boolean	false	Hide "Share tab audio" checkbox
disablePictureInPicture	boolean	false	Disable PiP mode
disableZoomLogo	boolean	false	Remove Zoom logo (deprecated)
defaultView	string	'speaker'	'gallery', 'speaker', 'multiSpeaker'

Feature Toggles

Parameter	Type	Default	Description
isSupportAV	boolean	true	Enable audio/video
isSupportChat	boolean	true	Enable in-meeting chat
isSupportQA	boolean	true	Enable webinar Q&A
isSupportCC	boolean	true	Enable closed captions
isSupportPolling	boolean	true	Enable polling
isSupportBreakout	boolean	true	Enable breakout rooms
isSupportNonverbal	boolean	true	Enable nonverbal feedback
isSupportSimulive	boolean	false	Enable Simulive
disableVoIP	boolean	false	Disable VoIP
disableReport	boolean	false	Disable report feature

Video Quality

Parameter	Type	Default	Description
enableHD	boolean	true (≥2.8.0)	Enable 720p video
enableFullHD	boolean	false	Enable 1080p for webinar attendees

Advanced

Parameter	Type	Default	Description
debug	boolean	false	Enable debug logging
patchJsMedia	boolean	false	Auto-apply media fixes
disableCORP	boolean	false	Disable web isolation
helper	string	''	Path to helper.html
externalLinkPage	string	-	Page for external links
webEndpoint	string	-	For ZFG environments
leaveOnPageUnload	boolean	false	Auto cleanup on page close
isShowJoiningErrorDialog	boolean	true	Show error dialog on join failure
meetingInfo	Array<string>	[...]	Meeting info to display
inviteUrlFormat	string	''	Custom invite URL format
loginWindow	object	{width: 400, height: 380}	Login popup size

Callbacks

Parameter	Type	Description
success	Function	Called on successful init
error	Function	Called on init failure

ZoomMtg.join() - All Options

Required

Parameter	Type	Description
signature	string	SDK JWT from backend (v5.0+: must include appKey prefix)
meetingNumber	string \| number	Meeting or webinar number
userName	string	Display name
passWord	string	Meeting password (capital W!)

Authentication

Parameter	Type	When Required	Description
zak	string	Starting as host	Host's Zoom Access Key
tk	string	Registration required	Registrant token
userEmail	string	Webinars	User email
obfToken	string	March 2026+	App Privilege Token

Optional

Parameter	Type	Description
customerKey	string	Custom ID (max 36 chars)
recordingToken	string	Local recording permission

Callbacks

Parameter	Type	Description
success	Function	Called on successful join
error	Function	Called on join failure

Event Listeners

User Events

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

ZoomMtg.inMeetingServiceListener('onUserLeave', (data) => {
  console.log('User left:', data);
  // Reason codes:
  // 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);
});

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

Meeting Status

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

Audio/Video Events

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

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

ZoomMtg.inMeetingServiceListener('onAudioQos', (data) => {
  console.log('Audio QoS:', data);
});

ZoomMtg.inMeetingServiceListener('onVideoQos', (data) => {
  console.log('Video QoS:', data);
});

Chat & Communication

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

ZoomMtg.inMeetingServiceListener('onReceiveTranscriptionMsg', (data) => {
  console.log('Transcription:', data);
});

ZoomMtg.inMeetingServiceListener('onReceiveTranslateMsg', (data) => {
  console.log('Translation:', data);
});

Recording & Sharing

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

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

ZoomMtg.inMeetingServiceListener('receiveSharingChannelReady', (data) => {
  console.log('Sharing channel ready:', data);
});

Breakout Rooms

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

Other Events

ZoomMtg.inMeetingServiceListener('onJoinSpeed', (data) => {
  console.log('Join metrics:', data);
});

ZoomMtg.inMeetingServiceListener('onVbStatusChange', (data) => {
  console.log('Virtual background status:', data);
});

ZoomMtg.inMeetingServiceListener('onFocusModeStatusChange', (data) => {
  console.log('Focus mode:', data);
});

ZoomMtg.inMeetingServiceListener('onPictureInPicture', (data) => {
  console.log('PiP status:', data);
});

ZoomMtg.inMeetingServiceListener('onClaimStatus', (data) => {
  console.log('Host claim status:', data);
});

Common Methods

Meeting Info

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

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

// Get meeting info
ZoomMtg.getCurrentMeetingInfo({
  success: (res) => console.log(res)
});

// Get SDK version
ZoomMtg.getWebSDKVersion({
  success: (version) => console.log(version)
});

Audio/Video Control

// Mute/unmute specific user
ZoomMtg.mute({ userId, mute: true });

// Mute/unmute all
ZoomMtg.muteAll({ muteAll: true });

// Stop incoming audio
ZoomMtg.stopIncomingAudio({ stop: true });

// Mirror video
ZoomMtg.mirrorVideo({ mirror: true });

Chat

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

Meeting Control

// Leave meeting
ZoomMtg.leaveMeeting({});

// End meeting (host only)
ZoomMtg.endMeeting({});

// Lock meeting
ZoomMtg.lockMeeting({ lock: true });

Host Controls

// Make host
ZoomMtg.makeHost({ userId });

// Make co-host
ZoomMtg.makeCoHost({ userId });

// Remove co-host
ZoomMtg.withdrawCoHost({ userId });

// Remove participant
ZoomMtg.expel({ userId });

// Put on hold
ZoomMtg.putOnHold({ userId, bHold: true });

// Claim host with host key
ZoomMtg.claimHostWithHostKey({ hostKey: '123456' });

// Reclaim host
ZoomMtg.reclaimHost({});

// Admit all from waiting room
ZoomMtg.admitAll({});

Raise Hand

// Raise hand
ZoomMtg.raiseHand({ userId });

// Lower hand
ZoomMtg.lowerHand({ oderId });

// Lower all hands
ZoomMtg.lowerAllHands({});

Spotlight & Pin

// Spotlight video
ZoomMtg.operateSpotlight({ oderId, action: 'add' }); // or 'remove'

// Pin video
ZoomMtg.operatePin({ oderId, action: 'add' }); // or 'remove'

// Allow multi-pin
ZoomMtg.allowMultiPin({ allow: true });

Screen Share

// Start screen share
ZoomMtg.startScreenShare({});

// Share specific source (Electron)
ZoomMtg.shareSource({ source });

Recording

// Start/stop recording
ZoomMtg.record({ record: true }); // or false

// Show/hide record button
ZoomMtg.showRecordFunction({ show: true });

Breakout Rooms

// Create breakout room
ZoomMtg.createBreakoutRoom({
  rooms: [{ name: 'Room 1' }, { name: 'Room 2' }]
});

// Open breakout rooms
ZoomMtg.openBreakoutRooms({});

// Close breakout rooms
ZoomMtg.closeBreakoutRooms({});

// Join breakout room
ZoomMtg.joinBreakoutRoom({ roomId });

// Leave breakout room
ZoomMtg.leaveBreakoutRoom({});

// Move user to breakout room
ZoomMtg.moveUserToBreakoutRoom({ oderId, roomId });

// Get breakout room status
ZoomMtg.getBreakoutRoomStatus({
  success: (res) => console.log(res)
});

Virtual Background

// Check support
ZoomMtg.isSupportVirtualBackground({
  success: (data) => console.log(data.result.isSupport)
});

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

// Get VB status
ZoomMtg.getVirtualBackgroundStatus({
  success: (data) => console.log(data)
});

// Lock virtual background (host)
ZoomMtg.lockVirtualBackground({ lock: true });

UI Control

// Show/hide meeting header
ZoomMtg.showMeetingHeader({ show: true });

// Show/hide invite button
ZoomMtg.showInviteFunction({ show: true });

// Show/hide join audio button
ZoomMtg.showJoinAudioFunction({ show: true });

// Show/hide callout button
ZoomMtg.showCalloutFunction({ show: true });

// Re-render with new options
ZoomMtg.reRender({ lang: 'de-DE' });

Language

// Load language
ZoomMtg.i18n.load('de-DE');

// Reload language
ZoomMtg.i18n.reload('de-DE');

// Get current language
ZoomMtg.i18n.getCurrentLang();

// Get all translations
ZoomMtg.i18n.getAll();

Rate Limits

Method	Limit
join()	10 seconds
callOut()	10 seconds
mute()	1 second
muteAll()	5 seconds

DOM Elements

The SDK automatically adds these elements:

• #zmmtg-root - Main meeting container
• #aria-notify-area - Accessibility announcements

Do NOT manually create or remove these.

SPA (React/Next) Overlay Gotcha

If you "join" but see a blank/black area or your app shell instead of the meeting UI, the Zoom UI can be rendering behind your app layout. Ensure #zmmtg-root occupies the viewport and is above other fixed elements:

#zmmtg-root {
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
}

Join Payload Sanitization Gotcha

If ZoomMtg.join() succeeds partially but the screen turns black and console shows errors like Cannot read properties of undefined (reading 'toString'), sanitize optional fields before calling join.

Do not pass optional keys with undefined values (userEmail, tk, zak, etc.). Build a payload and only attach those keys when they are non-empty strings.

Also prefer defaultView: 'speaker' during ZoomMtg.init() unless you have SharedArrayBuffer/gallery-view prerequisites fully configured.

Resources

• Main Web SDK Skill
• Reference Index
• Error Codes
• Common Issues
• SharedArrayBuffer Setup
• Official API Reference

Operations

• RUNBOOK.md - 5-minute preflight and debugging checklist.