Node.js/NPM

If you need more control and want to work at the application level, you can install the GitBook embed package from npm. This approach is ideal for server-side rendering, build-time integration, or custom iframe management.

Steps

npm install @gitbook/embed

import { createGitBook } from "@gitbook/embed";

const { createGitBook } = require("@gitbook/embed");

const gitbook = createGitBook({
  siteURL: "https://docs.company.com",
});

const iframe = document.createElement("iframe");
iframe.src = gitbook.getFrameURL({
  visitor: {
    token: 'your-jwt-token', // Optional: for Adaptive Content or Authenticated Access
    unsignedClaims: { // Optional: custom claims for dynamic expressions
      userId: '123',
      plan: 'premium'
    }
  }
});
iframe.id = "gitbook-embed-container";
iframe.style.border = "none";
iframe.style.width = "100%";
iframe.style.height = "600px";

const frame = gitbook.createFrame(iframe);
document.getElementById("gitbook-embed-container").appendChild(iframe);

// Navigate to a specific page in the docs tab
frame.navigateToPage("/getting-started");

// Switch to the assistant tab
frame.navigateToAssistant();

// Post a message to the chat
frame.postUserMessage("How do I get started?");

// Clear chat history
frame.clearChat();

frame.configure({
  tabs: ['assistant', 'docs'],
  actions: [
    {
      icon: 'circle-question',
      label: 'Contact Support',
      onClick: () => window.open('https://support.example.com', '_blank')
    }
  ],
  greeting: { title: 'Welcome!', subtitle: 'How can I help?' },
  suggestions: ['What is GitBook?', 'How do I get started?'],
  tools: [/* ... */]
});

frame.on('close', () => {
  console.log('Frame closed');
});

// Unsubscribe when done
const unsubscribe = frame.on('navigate', (data) => {
  console.log('Navigated to:', data.path);
});

API Reference

Client Factory

• createGitBook(options: { siteURL: string }) → GitBookClient

• client.getFrameURL(options?: { visitor?: {...} }) → string - Get the iframe URL with optional authenticated access

• client.createFrame(iframe: HTMLIFrameElement) → GitBookFrameClient - Create a frame client to communicate with the iframe

Frame Client Methods

• frame.navigateToPage(path: string) → void - Navigate to a specific page in the docs tab

• frame.navigateToAssistant() → void - Switch to the assistant tab

• frame.postUserMessage(message: string) → void - Post a message to the chat

• frame.clearChat() → void - Clear chat history

• frame.configure(settings: Partial<GitBookEmbeddableConfiguration>) → void - Configure the embed

• frame.on(event: string, listener: Function) → () => void - Register event listener (returns unsubscribe function)

Configuration Options

Configuration options are available via frame.configure({...}):

tabs

Override which tabs are displayed. Defaults to your site's configuration.

• Type: ('assistant' | 'docs')[]

actions

Custom action buttons rendered in the sidebar alongside tabs. Each action button triggers a callback when clicked.

Note: This was previously named buttons. Use actions instead.

• Type: Array<{ icon: string, label: string, onClick: () => void }>

greeting

Welcome message displayed in the Assistant tab.

• Type: { title: string, subtitle: string }

suggestions

Suggested questions displayed in the Assistant welcome screen.

• Type: string[]

tools

Custom AI tools to extend the Assistant. See Creating custom tools for details.

• Type: Array<{ name: string, description: string, inputSchema: object, execute: Function, confirmation?: {...} }>

visitor (Authenticated Access)

Pass to getFrameURL({ visitor: {...} }). Used for Adaptive Content and Authenticated Access.

• Type: { token?: string, unsignedClaims?: Record<string, unknown> }

Common pitfalls

• Forgetting to install the package – Run npm install @gitbook/embed before importing.

• Missing siteURL – The siteURL option is required and must match your published docs site.

• iFrame not rendering – Ensure the parent container has sufficient width/height for the iframe to display.

• Frame methods called before initialization – Wait until createFrame() completes before calling frame methods.

• Not unsubscribing from events – Remember to call the unsubscribe function returned by frame.on() to prevent memory leaks.

• Using old API methods – Methods like open(), close(), toggle(), and destroy() are not available in the NPM package. Use the frame client methods instead.