chrome-extension

Scope

Covers browser extensions built on Manifest V3 for Chrome and other Chromium browsers: the manifest and its permission model, the service worker and its lifecycle, content scripts and the worlds they run in, message passing between contexts, chrome.storage and state that must survive termination, request filtering with declarativeNetRequest, the user-facing surfaces (action and popup, side panel, options, context menus, notifications, DevTools panels, injected UI), project tooling with WXT including cross-browser output, testing and debugging each context, and Chrome Web Store packaging, policy and review.