Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
User-Agent Switcher and Manager
Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname
177 776 users
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
75 361 users
SoundFixer
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
17 915 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
87 438 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1 220 589 users
Decentraleyes
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.
206 011 users
Facebook Container
Neļaujiet Facebook izsekot jūs tīmeklī. Pārlūkam Firefox paredzētais paplašinājums Facebook Container palīdzēs jums pārņemt kontroli un izolēt jūsu tīmekļa aktivititāti no Facebook.
743 921 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
2 742 551 users
NoScript Security Suite
The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS other web security exploits. Disabled and can't reinstall? https://tinyurl.com/moz-ext-cert
1 528 229 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1 220 589 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
886 424 users
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
131 722 users
1Password X – Password Manager
The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.
52 467 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
87 438 users