Hot Reloading for Chrome Extensions

Hot reloading MV3 Chrome extensions uses a watcher server to monitor source files and a client script injected into the background service worker to trigger automatic extension and tab refreshes whenever changes are detected.

Hot reloading for MV3 service workers works by injecting a client script via importScripts as the first line of the background worker, which receives reload signals from the watcher server and refreshes open extension tabs before reloading the extension itself.

Yes, this hot reloading setup is zero-dependency and Node-based. You only need to copy the provided server and client scripts into your project root, update your background worker to import the client, and run the watcher server with Node.

Yes, hot reloading requires adding the management and tabs permissions to your manifest.json file. These permissions allow the client script to refresh open extension tabs and reload the extension automatically during development.

Yes, the hot reloading system targets the full MV3 extension development workflow, refreshing background service workers, options pages, and content scripts by reloading open extension tabs and then reloading the extension on source file changes.