# CRXJS Documentation

> Build cross-browser extensions with native HMR, zero-config setup, and Vite 8 support.

## Documentation Sets

- [CRXJS Documentation](https://crxjs.dev//llms-full.txt): Build cross-browser extensions with native HMR, zero-config setup, and Vite 8 support.

## Getting Started

Learn how to set up and use CRXJS

- [Introduction](/guide/introduction): Overview of CRXJS features and capabilities
- [Quick Start with create-crxjs](/guide/installation/create-crxjs): Create a new project using the official starter template
- [Manual Setup](/guide/installation/from-scratch): Step-by-step guide for manual installation
- [Loading Extensions](/guide/installation/loading): How to load and test your extension in Chrome
- [Building for Production](/guide/installation/packaging): Prepare your extension for distribution

## Core Concepts

Key concepts for CRXJS development

- [Manifest Configuration](/concepts/manifest): Understanding the manifest.json file structure
- [Background Scripts](/concepts/background): Working with extension background processes
- [Content Scripts](/concepts/content): Injecting scripts into web pages
- [Extension Pages](/concepts/pages): Creating popup and options pages

## Demos

Example extension fixtures and contributor playgrounds

- [Demos](/demos): Browse CRXJS demo fixtures and contributor playgrounds
- [E2E Demo Fixtures](https://github.com/crxjs/chrome-extension-tools/tree/main/packages/vite-plugin/tests/e2e): Tested extension examples for framework integrations and Manifest V3 behavior
- [Contributor Playgrounds](https://github.com/crxjs/chrome-extension-tools/tree/main/playgrounds): Runnable playground projects for CRXJS contributors