Explore powerful tools and features to customize Firefox and make the browser all your own.
The fastest and safest web browsing experience.
An easy-to-use font inspector to get CSS styles of the selected element
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.
Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom and minimum font size. Fit-to-width zooming can be applied to pages automatically. Fit-to-window scaling can be applied to small images.