Add CometChat Widget to Wix

Using the v1 widget (Chat Embed @1.x.x)? Widgets created in the CometChat Dashboard now use v2 (@cometchat/chat-embed@2.x.x). On npm, v2 is published under the next tag — latest and a bare package name still resolve to v1 — and existing embeds that load @1.x.x keep running v1 until you change the script tag. Please upgrade to v2. In a future update, v2 will become the default (latest) version on npm and v1 will be marked as legacy. Before you upgrade, read Upgrade from v1 to v2: v2 renames CSS classes, so custom CSS and JavaScript may need updating.

Add the CometChat Widget with a single snippet in Wix’s Custom Code settings. Pick the sign-in flow that matches your site: guests, auto-created users by ID, or backend-issued auth tokens. Choose how visitors sign in:

Anonymous Chat (Guest Mode)

Visitors can chat without accounts.
Fastest, friction-free setup.

Create + Log In User On The Fly

Auto-create CometChat users with your existing IDs (email, user ID, etc.).
No backend needed; CometChat creates users on first visit.

Backend-Created User (Auth Token Login)

Use your backend to issue auth tokens.
Keep your Auth Key off the page.

Where to place the snippet in Wix

Add it as site-level custom code, not as an Embed HTML element.

In your Wix dashboard, go to Settings → Custom Code and click + Add Custom Code.
Paste the snippet from your chosen option below.
Set Add Code to Pages to All pages, and Place Code in to Body – end.
Give it a name, click Apply, then Publish your site.
Open the published site — custom code does not run in the editor preview — and confirm the widget appears.

Do not use Add → Embed Code → Embed HTML for this. That element renders your code inside a separate Wix iframe, and browsers do not grant camera or microphone access to an embedded frame unless the page embedding it says so. Wix’s does not, so voice and video calls fail there with a permission error even after the visitor has allowed access — the chat works, the call does not.Site-level custom code runs in the page itself, where both are permitted.

1. Anonymous Chat (Guest Mode)

Use this when: you want visitors to chat without signing in.

Paste this into Custom Code

<script defer src="https://cdn.jsdelivr.net/npm/@cometchat/chat-embed@2.x.x/dist/main.js"></script>
<script>
  const COMETCHAT_WIDGET_CONFIG = {
    appID: "YOUR_APP_ID",
    region: "YOUR_APP_REGION",
    mode: "guest",
    authKey: "YOUR_AUTH_KEY",

    language: "en-US",          // optional, defaults to "en-US"

    // Optional: how the guest appears in chat
    user: {
      name: "Guest User",
      avatar: "",
      link: ""
    },

    // Widget placement + size
    mount: "#cometChatMount",
    width: "450px",
    height: "80vh",
    isDocked: true,
    //variantID: "YOUR_VARIANT_ID",
    //chatType: "user" | "group",
    //defaultChatID: "uid_or_guid",
    //dockedAlignment: "left" | "right"
    //autoOpenFirstItem: false,
  };

  const startWidget = () => {
    // Custom code injects no markup, so the widget's mount point has to be created here.
    if (!document.getElementById("cometChatMount")) {
      const mount = document.createElement("div");
      mount.id = "cometChatMount";
      document.body.appendChild(mount);
    }
    CometChatApp.CometChatAuth.start(COMETCHAT_WIDGET_CONFIG);
  };

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", startWidget);
  } else {
    startWidget();
  }
</script>

Update these values

Setting	What to enter / where to find it
`appID`, `region`, `authKey`	Copy from Dashboard
`language`	Optional locale for the widget UI. Defaults to `en-US`. Supported: `en-US`, `en-GB`, `fr`, `de`, `es`, `hi`, `ja`, `zh`, `zh-TW`, `pt`, `ru`, `it`, `nl`, `tr`, `ko`, `sv`, `ms`, `lt`, `hu`.
`user.name`, `user.avatar`, `user.link`, `user.metadata`	Optional guest display info—leave blank if you don’t need it. `metadata` takes any JSON object and is stored on the created user.
`width`, `height`, `isDocked`	Adjust the widget width & height. isDocked = true - appears as icon on page and expands when clicked. isDocked = false - appears embedded on the page.
`variantID`	Specifies a particular version or snapshot of your widget configuration. If omitted, the first available variant is used.
`chatType`	Determines the type of conversation the widget initiates by default (one-on-one user chat or a group chat).
`defaultChatID`	The specific chat with user (`uid`) or group (`guid`) that should automatically open when the widget loads.
`dockedAlignment`	Controls the position of the docked widget interface on the page (left side or right side).
`autoOpenFirstItem`	When set to false, the widget does not automatically open the first conversation on load. Defaults to true.
`storageMode`	Where the session is kept — `"LOCAL"` (survives a reload and a new tab) or `"SESSION"` (ends when the tab closes). Defaults to `"LOCAL"`.
`localization`	Override any UI text, or add a language the widget does not ship. See Custom text and languages.
`aiAssistantTools`, `parentMessageId`, `loadLastAgentConversation`	Apply only to a widget built from an AI agent variant — see Integrate an AI Agent. They are accepted and ignored on a standard chat variant.

2. Create + Log In User On The Fly

Use this when: you already have user IDs (email, username, member ID) and want to log people in with that ID automatically. CometChat creates the user the first time it sees the ID.

Paste this into Custom Code

<script defer src="https://cdn.jsdelivr.net/npm/@cometchat/chat-embed@2.x.x/dist/main.js"></script>
<script>
  const COMETCHAT_WIDGET_CONFIG = {
    appID: "YOUR_APP_ID",
    region: "YOUR_APP_REGION",      // e.g. "us", "eu", "in"
    mode: "uid",                    // keep this as "uid"
    authKey: "YOUR_AUTH_KEY",

    // IMPORTANT: this must be unique per user
    uid: "UNIQUE_USER_ID",          // e.g. "user_123", "customer_42"

    language: "en-US",              // optional, defaults to "en-US"

    // Optional: user profile shown in chat
    user: {
      name: "User Name",            // e.g. "Alex Johnson"
      avatar: "https://example.com/uid.png",
      link: "https://example.com/profile/uid"
    },

    // Widget placement + size
    mount: "#cometChatMount",
    width: "450px",
    height: "80vh",
    isDocked: true,
    //variantID: "YOUR_VARIANT_ID",
    //chatType: "user" | "group",
    //defaultChatID: "uid_or_guid",
    //dockedAlignment: "left" | "right"
    //autoOpenFirstItem: false,
  };

  const startWidget = () => {
    // Custom code injects no markup, so the widget's mount point has to be created here.
    if (!document.getElementById("cometChatMount")) {
      const mount = document.createElement("div");
      mount.id = "cometChatMount";
      document.body.appendChild(mount);
    }
    CometChatApp.CometChatAuth.start(COMETCHAT_WIDGET_CONFIG);
  };

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", startWidget);
  } else {
    startWidget();
  }
</script>

Update these values

Setting	What to enter / where to find it
`appID`, `region`, `authKey`	Copy from Dashboard
`uid`	Pass the unique ID from your page (for example `member.id`, email, or a UUID). CometChat creates the user the first time it sees that ID.
`language`	Optional locale for the widget UI. Defaults to `en-US`. Supported: `en-US`, `en-GB`, `fr`, `de`, `es`, `hi`, `ja`, `zh`, `zh-TW`, `pt`, `ru`, `it`, `nl`, `tr`, `ko`, `sv`, `ms`, `lt`, `hu`.
`user.name`, `user.avatar`, `user.link`, `user.metadata`	Optional profile info you already store for that person. `metadata` takes any JSON object and is stored on the created user.
`mode`	Keep this as `"uid"` so the widget knows you’re logging in with IDs.
`width`, `height`, `isDocked`	Adjust the widget width & height. isDocked = true - appears as icon on page and expands when clicked. isDocked = false - appears embedded on the page.
`variantID`	Specifies a particular version or snapshot of your widget configuration. If omitted, the first available variant is used.
`chatType`	Determines the type of conversation the widget initiates by default (one-on-one user chat or a group chat).
`defaultChatID`	The specific chat with user (`uid`) or group (`guid`) that should automatically open when the widget loads.
`dockedAlignment`	Controls the position of the docked widget interface on the page (left side or right side).
`autoOpenFirstItem`	When set to false, the widget does not automatically open the first conversation on load. Defaults to true.
`storageMode`	Where the session is kept — `"LOCAL"` (survives a reload and a new tab) or `"SESSION"` (ends when the tab closes). Defaults to `"LOCAL"`.
`localization`	Override any UI text, or add a language the widget does not ship. See Custom text and languages.
`aiAssistantTools`, `parentMessageId`, `loadLastAgentConversation`	Apply only to a widget built from an AI agent variant — see Integrate an AI Agent. They are accepted and ignored on a standard chat variant.

Use this when: people sign in through your backend and you generate their CometChat auth token server-side. This keeps your Auth Key off the page. Server-side flow (auth token login):

Authenticate the user in your app.
If it’s their first time, call Create User (https://www.cometchat.com/docs/rest-api/users/create) — you can also request an auth token in that call.
For returning users, call Create Auth Token (https://www.cometchat.com/docs/rest-api/auth-tokens/create) to issue a fresh token.
Send the token to the browser and place it in the widget config below.
The same token works for the CometChat Widget, UI Kit, or SDK.

Full walkthrough: How to properly log in and create users in CometChat.

Paste this into Custom Code

<script defer src="https://cdn.jsdelivr.net/npm/@cometchat/chat-embed@2.x.x/dist/main.js"></script>
<script>
  const COMETCHAT_WIDGET_CONFIG = {
    appID: "YOUR_APP_ID",
    region: "YOUR_APP_REGION",       // e.g. "us", "eu", "in"
    mode: "authToken",               // keep this as "authToken"

    // Generated BY YOUR BACKEND after user login
    authToken: "USER_AUTH_TOKEN",

    language: "en-US",               // optional, defaults to "en-US"

    // Widget placement + size
    mount: "#cometChatMount",
    width: "450px",
    height: "80vh",
    isDocked: true,
    //variantID: "YOUR_VARIANT_ID",
    //chatType: "user" | "group",
    //defaultChatID: "uid_or_guid",
    //dockedAlignment: "left" | "right"
    //autoOpenFirstItem: false,
  };

  const startWidget = () => {
    // Custom code injects no markup, so the widget's mount point has to be created here.
    if (!document.getElementById("cometChatMount")) {
      const mount = document.createElement("div");
      mount.id = "cometChatMount";
      document.body.appendChild(mount);
    }
    CometChatApp.CometChatAuth.start(COMETCHAT_WIDGET_CONFIG);
  };

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", startWidget);
  } else {
    startWidget();
  }
</script>

Update these values

Setting	What to enter / where to find it
`appID`, `region`	Copy from Dashboard
`mode`	Keep as `"authToken"` so the widget expects a server-issued token.
`authToken`	Generate on your server: (1) call the CometChat Auth Token API with your API key, (2) get the token for that user, (3) send it to the page and place it here.
`language`	Optional locale for the widget UI. Defaults to `en-US`. Supported: `en-US`, `en-GB`, `fr`, `de`, `es`, `hi`, `ja`, `zh`, `zh-TW`, `pt`, `ru`, `it`, `nl`, `tr`, `ko`, `sv`, `ms`, `lt`, `hu`.
`width`, `height`, `isDocked`	Adjust the widget width & height. isDocked = true - appears as icon on page and expands when clicked. isDocked = false - appears embedded on the page.
`variantID`	Specifies a particular version or snapshot of your widget configuration. If omitted, the first available variant is used.
`chatType`	Determines the type of conversation the widget initiates by default (one-on-one user chat or a group chat).
`defaultChatID`	The specific chat with user (`uid`) or group (`guid`) that should automatically open when the widget loads.
`dockedAlignment`	Controls the position of the docked widget interface on the page (left side or right side).
`autoOpenFirstItem`	When set to false, the widget does not automatically open the first conversation on load. Defaults to true.
`storageMode`	Where the session is kept — `"LOCAL"` (survives a reload and a new tab) or `"SESSION"` (ends when the tab closes). Defaults to `"LOCAL"`.
`localization`	Override any UI text, or add a language the widget does not ship. See Custom text and languages.
`aiAssistantTools`, `parentMessageId`, `loadLastAgentConversation`	Apply only to a widget built from an AI agent variant — see Integrate an AI Agent. They are accepted and ignored on a standard chat variant.

Troubleshooting

Widget not appearing? Custom code only runs on the published site, never in the editor preview — publish, then reload. Check the browser console for the chat-embed@2.x.x script and for errors from it.
Calls fail with a permission error? The snippet is almost certainly in an Embed HTML element rather than Custom Code. See the warning above.
Login/auth errors? For UID mode, ensure the uid is unique and you’re using an App Auth Key (not REST API key). For auth token mode, make sure the token matches the logged-in user.
Still showing guests only? Make sure you’re actually providing uid or authToken in the snippet (and that your page logic passes the right IDs).
Page preview vs published: Test on a published page if preview blocks scripts.

Advanced JavaScript Controls

The embed works out of the box. Use the helpers below only if you need to open a specific chat, listen for widget events, or change settings on the fly.

Before you follow advanced setup steps

Keep the standard widget snippet (from the Integration guide) on your page.
Add another <script type="module"> right after it or inside your site builder’s “custom code” area.
Wrap your code in window.addEventListener("DOMContentLoaded", () => { ... }) so it runs after the widget loads.
Replace placeholder text such as UID, GUID, and LANGUAGE_CODE with your real values.

When the widget is ready, it exposes a global helper named CometChatApp. Every example below shows a tiny recipe you can paste inside the script mentioned above.

Open a chat or start a call

Use these helpers when you want the widget to jump straight to a person/group or begin a call. Drop the snippet inside your custom script and replace UID/GUID with real IDs from your CometChat app.

// Open chat with a specific person
CometChatApp.chatWithUser("UID");

// Open chat with a specific group
CometChatApp.chatWithGroup("GUID");

// Start a call with a person or a group
CometChatApp.callUser("UID");
CometChatApp.callGroup("GUID");

// Toggle extra UI bits
CometChatApp.showGroupActionMessages(true); // Show join/leave messages
CometChatApp.showDockedUnreadCount(true);   // Show unread badge on docked bubble

Run your own code when something happens inside the widget—new message, docked bubble opened, or someone switching chats. Keep the event names as shown; just change what happens inside each arrow function.

// Fire when a new message arrives
CometChatApp.uiEvent("onMessageReceived", (message) => {
  console.log("New message:", message);
});

// Fire when the docked bubble opens or closes
CometChatApp.uiEvent("onOpenChat", () => console.log("Chat opened"));
CometChatApp.uiEvent("onCloseChat", () => console.log("Chat closed"));

// Fire when the user switches between conversations
CometChatApp.uiEvent("onActiveChatChanged", (chat) => {
  console.log("Now viewing:", chat);
});

Create/Update users on the fly

This will only work with authKey

If you collect names, avatars, or profile links on your site, you can push them straight into CometChat. Replace the placeholders and run the snippet after the widget loads.

// Create or update a user
const user = new CometChatApp.CometChat.User("UID");
user.setName("User Name");
user.setAvatar("https://example.com/avatar.png");
user.setLink("https://example.com/profile");

CometChatApp.createOrUpdateUser(user).then((result) => {
  console.log("User saved:", result);
});

Create/Update groups on the fly

If you want to create groups directly from your page, use this snippet. Replace the placeholders and run the snippet after the widget loads.

// Create or update a group
const group = new CometChatApp.CometChat.Group("GUID", "GROUP_NAME", "public");

CometChatApp.createOrUpdateGroup(group).then((result) => {
  console.log("Group saved:", result);
});

Log users in or out with code

Use an auth token if you have a backend, or fall back to a plain UID for quick tests. Run these helpers after the widget loads.

// Sign in with a secure auth token from your server
CometChatApp.login({ authToken: "USER_AUTH_TOKEN" });

// ...or sign in directly with a UID (less secure, but fast for demos)
CometChatApp.login({ uid: "UID" });

// Sign the current user out
CometChatApp.logout();

// Listen for logout so you can clean up your UI
CometChatApp.uiEvent("onLogout", () => {
  console.log("User logged out");
});

login() does nothing while someone is signed in. It returns the current user and ignores the uid you pass, because the SDK keeps its session across reloads. To change users, sign the previous one out first:

await CometChatApp.logout();
await CometChatApp.login({ uid: "another-user" });
await CometChatApp.launch({ targetElementID: "cometChatMount", isDocked: false });

Control where data is stored

Pick whether the widget should remember login info in the browser tab only (SESSION) or across visits (LOCAL). Update the placeholders, then drop this script right after the default widget embed.

const COMETCHAT_DATA = {
  appID: "<YOUR_APP_ID>",
  appRegion: "<YOUR_APP_REGION>",
  authKey: "<YOUR_AUTH_KEY>",
  storageMode: "SESSION", // or "LOCAL" (default)
};

const COMETCHAT_USER_UID = "UID"; // The person who should log in

const COMETCHAT_LAUNCH_OPTIONS = {
  targetElementID: "cometChatMount",
  isDocked: true,
  width: "700px",
  height: "500px",
};

window.addEventListener("DOMContentLoaded", () => {
  CometChatApp.init(COMETCHAT_DATA)
    .then(() => CometChatApp.login({ uid: COMETCHAT_USER_UID }))
    .then(() => CometChatApp.launch(COMETCHAT_LAUNCH_OPTIONS))
    .catch(console.error);
});

// Optional extras:
// COMETCHAT_LAUNCH_OPTIONS.variantID = "YOUR_VARIANT_ID";
// COMETCHAT_LAUNCH_OPTIONS.chatType = "user" | "group";
// COMETCHAT_LAUNCH_OPTIONS.defaultChatID = "uid_or_guid";
// COMETCHAT_LAUNCH_OPTIONS.dockedAlignment = "left" | "right";
// COMETCHAT_LAUNCH_OPTIONS.autoOpenFirstItem = false;
// COMETCHAT_LAUNCH_OPTIONS.language = "fr";
// COMETCHAT_LAUNCH_OPTIONS.localization = { fr: { chats: "Discussions" } };

init() takes appRegion; CometChatAuth.start() takes region. They are the same value under different names, and each call rejects the other’s spelling.

The widget starts in the locale you set with the language launch option, and falls back to en-US when you do not set one. You can switch locale at any time after load — run the helper and swap in the language code you need.

CometChatApp.localize("en-US"); // Example: force English (United States)

Popular codes

Language	Code
English (United States)	`en-US`
English (United Kingdom)	`en-GB`
Dutch	`nl`
French	`fr`
German	`de`
Hindi	`hi`
Italian	`it`
Japanese	`ja`
Korean	`ko`
Portuguese	`pt`
Russian	`ru`
Spanish	`es`
Turkish	`tr`
Chinese (Simplified)	`zh`
Chinese (Traditional)	`zh-TW`
Malay	`ms`
Swedish	`sv`
Lithuanian	`lt`
Hungarian	`hu`

Need another locale? Use the same pattern with its code (for example CometChatApp.localize("ko") for Korean).

Need Help?

If you have questions or run into issues, reach out to CometChat Support.

Add CometChat Widget to Wix

Anonymous Chat (Guest Mode)

Create + Log In User On The Fly

Backend-Created User (Auth Token Login)

Where to place the snippet in Wix

1. Anonymous Chat (Guest Mode)

Paste this into Custom Code

Update these values

2. Create + Log In User On The Fly

Paste this into Custom Code

Update these values

Paste this into Custom Code

Update these values

Troubleshooting

Advanced JavaScript Controls

Before you follow advanced setup steps

Open a chat or start a call

Listen for widget events

Create/Update users on the fly

Create/Update groups on the fly

Log users in or out with code

Control where data is stored

Change the widget language

Need Help?

Anonymous Chat (Guest Mode)

Create + Log In User On The Fly

Backend-Created User (Auth Token Login)

​Where to place the snippet in Wix

​1. Anonymous Chat (Guest Mode)

​Paste this into Custom Code

​Update these values

​2. Create + Log In User On The Fly

​Paste this into Custom Code

​Update these values

​3. Backend-Created User (Auth Token Login)

​Paste this into Custom Code

​Update these values

​Troubleshooting

​Advanced JavaScript Controls

​Before you follow advanced setup steps

​Open a chat or start a call

​Listen for widget events

​Create/Update users on the fly

​Create/Update groups on the fly

​Log users in or out with code

​Control where data is stored

​Change the widget language

​Need Help?

Where to place the snippet in Wix

1. Anonymous Chat (Guest Mode)

Paste this into Custom Code

Update these values

2. Create + Log In User On The Fly

Paste this into Custom Code

Update these values

3. Backend-Created User (Auth Token Login)

Paste this into Custom Code

Update these values

Troubleshooting

Advanced JavaScript Controls

Before you follow advanced setup steps

Open a chat or start a call

Listen for widget events

Create/Update users on the fly

Create/Update groups on the fly

Log users in or out with code

Control where data is stored

Change the widget language

Need Help?