Explore powerful tools and features to customize Firefox and make the browser all your own.
Make the web faster, more private, and more secure.
Prevent tabs opened by a hyperlink from hijacking the previous tab by adding the rel=noopener attribute to all hyperlinks (excluding same-domain hyperlinks).
Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
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.
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
Tons of features to improve your user experience on YouTube™.
Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname
Listen to live radio stations from around the world!
Offline P2P encrypted password manager & authenticator. Auto-fill Two-Factor Authentication (2FA) tokens.