Add-ons for Firefox (en-US)

BY FIREFOX

Firefox Relay

Mask your email to protect your identity & prevent junk mail. New updates make Firefox Relay even easier to use.

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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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Extension Starter Pack

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Privacy & Security

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Productivity extensions

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Recommended extensions

To Google Translate
Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.
Rated 4.1 out of 5
Juan Escobar
645,161 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
Rated 4.4 out of 5
Trishul
21,152 users
Tomato Clock - A Simple Pomodoro Timer
A simple browser extension for managing your productivity
Rated 4.5 out of 5
Samuel Jun
31,865 users
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
Rated 4.6 out of 5
Dave G
92,481 users

Recommended themes

clouds dark v1
Rated 5 out of 5
spookyjade
979 users
Meteor Dragon
Rated 4.5 out of 5
Fyreheart
3,078 users
seaglass
Rated 5 out of 5
tobythetober
2,128 users

Tab managers

Auto Tab Discard
Increase browser speed and reduce memory load and when you have numerous open tabs.
Rated 4.5 out of 5
tlintspr
90,052 users
OneTab
Save up to 95% memory and reduce tab clutter
Rated 4.1 out of 5
OneTab Team
153,741 users
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
151,505 users
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
Rated 4.6 out of 5
tabliss.io
72,540 users

Gaming & media extensions

Return YouTube Dislike
Returns ability to see dislike statistics on youtube
Rated 4.6 out of 5
Dmitry Selivanov
909,388 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)
740,701 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
214,574 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
Rated 4.7 out of 5
Max RF
491,418 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
1,283,036 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
214,574 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
47,653 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
52,718 users

“reddit” tagged extensions

Raindrop.io
All-in-one bookmark manager
Rated 4.3 out of 5
Rustem Mussabekov
41,964 users
Feedbro
Advanced Feed Reader - Read news & blogs or any RSS/Atom/RDF source.
Rated 4.4 out of 5
Nodetics
41,026 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
Rated 4.7 out of 5
honestbleeps
295,302 users
Old Reddit Redirect
Ensure Reddit always loads the old design
Rated 4.7 out of 5
tomjwatson
63,095 users