Chrome Extensions

Build cross-platform browser tools using HTML, CSS, and JavaScript to reach over 3 billion Chrome users worldwide.

Developers build Chrome extensions using standard web stacks (HTML, CSS, and JavaScript) to modify browser behavior and UI. These tools run on Manifest V3: the current standard emphasizing security and performance through service workers. You can integrate complex features like content filtering (uBlock Origin), password management (1Password), or productivity tracking (Toggl). Distribution happens via the Chrome Web Store, providing instant access to a global install base. The API surface is broad: use chrome.tabs to manage navigation or chrome.storage for local data persistence.

https://developer.chrome.com/docs/extensions