Add-ons for Firefox (en-US)

RECOMMENDED

Clippings

No need to write the same thing over and over. Save frequently-entered text to paste anytime.

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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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YouTube customization

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Privacy & Security

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Reddit extensions

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Recommended extensions

Custom Scrollbars
Give Firefox a personal touch with customized scrollbars!
Rated 4.5 out of 5
Wesley Branton
16,742 users
Tomato Clock - A Simple Pomodoro Timer
A simple browser extension for managing your productivity
Rated 4.5 out of 5
Samuel Jun
33,004 users
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
Rated 4.4 out of 5
Val Packett
48,875 users
CanvasBlocker
Alters some JS APIs to prevent fingerprinting.
Rated 4.6 out of 5
kkapsner
38,241 users

Recommended themes

Small globe thistle
Rated 4.7 out of 5
takapeco
567 users
Proxy Universe - Dark Orange Neon
Rated 4.1 out of 5
Proxy Universe
1,167 users
Calm Evening Theme
Rated 4.3 out of 5
CAXAline
423 users

Tab managers

Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
Rated 4.2 out of 5
sienori
162,767 users
Auto Tab Discard
Increase browser speed and reduce memory load and when you have numerous open tabs.
Rated 4.5 out of 5
tlintspr
95,732 users
OneTab
Save up to 95% memory and reduce tab clutter
Rated 4.1 out of 5
OneTab Team
158,440 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
Rated 4.1 out of 5
James Fray
77,960 users

Gaming & media extensions

Enhancer for YouTube™
Take control of YouTube and boost your user experience!
Rated 4.7 out of 5
Max RF
576,252 users
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
Rated 4.8 out of 5
Ajay (SponsorBlock)
794,624 users
Return YouTube Dislike
Returns ability to see dislike statistics on youtube
Rated 4.5 out of 5
Dmitry Selivanov
904,562 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
Rated 3.8 out of 5
LSD Software
225,601 users

Accessibility extensions

Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
Rated 4.5 out of 5
Dark Reader Ltd
1,327,255 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
Rated 3.8 out of 5
LSD Software
225,601 users
Dark Mode
Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.
Rated 3.2 out of 5
Dark Mode
50,535 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
Rated 4.7 out of 5
mbnuqw
53,486 users

“download” tagged extensions

Video Download Helper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
vdh
1,813,933 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
Rated 4.1 out of 5
Dishita
422,901 users
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
Rated 3.9 out of 5
Joe Ertaba
106,387 users
SingleFile
Save an entire web page—including images and styling—as a single HTML file.
Rated 4.8 out of 5
gildas
90,094 users