Add-ons for Firefox (en-US)

RECOMMENDED

Tranquility Reader

Read with more clarity and ease. Remove the clutter around text on web pages.

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Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.

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Tab organizers and tools

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Privacy beyond browser extensions

Media enhancers for Firefox

Explore extensions

Recommended extensions

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.
Rated 4.6 out of 5
Stylus Team
93,346 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4.1 out of 5
Drive4ik
20,508 users
AdBlocker Ultimate
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
Rated 4.7 out of 5
AdAvoid
906,342 users
Audio Equalizer
Stylish audio equalizer in toolbar popup.
Rated 4.2 out of 5
Muyor
19,011 users

Popular themes

Dark Fox
Rated 4.7 out of 5
randomaster
77,419 users
Rainbow Blur
Rated 4.7 out of 5
Alix P
41,672 users
Matte Black (Red)
Rated 4.9 out of 5
Elijah Lopez
40,368 users

Enhanced privacy extensions

Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
Rated 4.5 out of 5
Mozilla Firefox
2,004,206 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
Rated 4.5 out of 5
Ghostery
1,578,430 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,242,388 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.
Rated 4.8 out of 5
Thomas Rientjes
282,571 users

Popular extensions

uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
Rated 4.7 out of 5
Raymond Hill
5,781,071 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
Rated 4.3 out of 5
mig
3,032,883 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
Rated 4.5 out of 5
Mozilla Firefox
2,004,206 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
Rated 4.4 out of 5
Giorgio Maone
1,816,521 users

Recommended themes

Yellow Spring Flowers
Rated 4.5 out of 5
jwp_sf
350 users
some spring flowers
Rated 4.5 out of 5
manticora
74 users
blue tinopener twirl
Rated 3.7 out of 5
lueckenhaus
1 user

Recommended password managers

LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Rated 3.7 out of 5
LastPass
1,067,766 users
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
Rated 4.8 out of 5
Bitwarden Inc.
212,011 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
Rated 4.2 out of 5
Siber Systems
95,549 users
MYKI Password Manager & Authenticator
Offline P2P encrypted password manager & authenticator. Auto-fill Two-Factor Authentication (2FA) tokens.
Rated 4.8 out of 5
MYKI
3,783 users