Extensions are like apps for Firefox.
They add features to Firefox to make browsing faster, safer, or just plain fun.
Automatically learns to block invisible trackers.
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.