WXT

Overview

WXT is a Vite-based framework for building browser extensions — think "Next.js for extensions." File-based entrypoints, hot reload, TypeScript-first, and it outputs a single extension that works on Chrome (MV3), Firefox (MV2/MV3), Safari, and Edge. No more manually editing manifest.json or reloading the extension after every change.

When to Use

• Building a browser extension for Chrome, Firefox, or all browsers
• Want hot reload during development (not manual reload)
• Need TypeScript + React/Vue/Svelte in your extension
• Migrating from Manifest V2 to V3
• Want one codebase that targets multiple browsers

Instructions

Setup