explaingit

gitbookio/gitbook

📈 Trending★ 28,845TypeScriptAudience · developerComplexity · 3/5ActiveLicenseSetup · moderate

TLDR

Open-source frontend engine that renders GitBook documentation sites into public websites. Built with Next.js and TypeScript, it handles layout, navigation, search, and translations.

Mindmap

mindmap
  root((repo))
    What it does
      Renders GitBook content
      Handles navigation layout
      Manages search features
      Supports translations
    Tech stack
      Next.js
      TypeScript
      React
      Bun runtime
    Use cases
      Self-host documentation
      Apply custom styling
      Fix rendering bugs
      Contribute improvements
    Audience
      Documentation teams
      Open source contributors
      Self-hosting users

Things people build with this

USE CASE 1

Self-host your documentation site with full control over styling and deployment.

USE CASE 2

Contribute bug fixes and UI improvements to how GitBook sites render.

USE CASE 3

Customize the rendering engine to match your product's branding and design system.

USE CASE 4

Run the engine locally to preview changes before publishing to your GitBook space.

Tech stack

TypeScriptNext.jsReactBun

Getting it running

Difficulty · moderate Time to first run · 30min

Requires Bun runtime instead of Node.js, which may need installation if not already present.

GNU GPLv3: you can use and modify freely, but if you distribute your changes, you must release the source code publicly. A commercial license is available for private forks.

In plain English

This repository contains the open-source frontend rendering engine used to display GitBook documentation sites. GitBook is a platform where teams write and publish technical documentation; this code is specifically the part that takes content stored in GitBook and renders it as a public-facing website that readers see in their browser. The rendering engine is built on Next.js (a framework for building web applications with React) and TypeScript. It fetches content from the GitBook platform and turns it into HTML pages, handling things like navigation, page layout, search, and translations for the interface text. There are two main reasons someone would use this repository. First, contributors who want to improve the appearance or fix bugs in how GitBook sites are displayed can run this locally and point it at any publicly published GitBook space to see their changes in real time. Second, teams who want to self-host the rendering layer, for example to apply custom styling that fully integrates their documentation into their own product, can deploy this separately, though the team cautions that self-hosting means taking responsibility for keeping it updated. The license is GNU GPLv3, which means if you distribute a modified version, you must also make the source code public. A commercial license is available for those who need a private fork. The project uses Bun as its package manager and runtime environment.

Copy-paste prompts

Prompt 1
How do I set up this GitBook rendering engine locally to preview changes to my documentation site?
Prompt 2
What files do I need to modify to add custom CSS styling to the rendered pages?
Prompt 3
How do I deploy this rendering engine to my own server instead of using GitBook's hosted version?
Prompt 4
Where in the codebase would I add a new feature like custom analytics or tracking to documentation pages?
Prompt 5
How do I point this engine at my GitBook space to test rendering changes in real time?
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Generated 2026-05-18 · Model: sonnet-4-6 · Verify against the repo before relying on details.