Add-ons for Firefox (en-US)

RECOMMENDED

Tranquility Reader

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

Get the extension

Extensions are like apps for Firefox.

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

See all extensions

Productivity tools

See staff picks

YouTube customization

See staff picks

Privacy & Security extensions

See staff picks

Recommended extensions

Zoom Page WE
Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom and minimum font size. Fit-to-width zooming can be applied to pages automatically. Fit-to-window scaling can be applied to small images.
Rated 3.8 out of 5
DW-dev
25,164 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,891,393 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)
622,349 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4 out of 5
Drive4ik
103,542 users

Top rated themes

Kirby9
Rated 5 out of 5
＼(^o^)／
9,438 users
Praise the sun (animated)
Rated 4.9 out of 5
anon
16,186 users
Spirited Away (Animated)
Rated 4.9 out of 5
Max
22,665 users

Tab managers

Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
Rated 4.3 out of 5
BillK
21,574 users
Tree Style Tab
Show tabs like a tree.
Rated 4.5 out of 5
Piro (piro_or)
222,223 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4 out of 5
Drive4ik
103,542 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
Rated 4.2 out of 5
OneTab Team
173,134 users

Popular extensions

uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Rated 4.8 out of 5
Raymond Hill
9,678,822 users
Video DownloadHelper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
mig
1,936,904 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,891,393 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
Rated 4.7 out of 5
Adguard Software Ltd
1,408,568 users

Recommended themes

Cozy Rain Goddess
Rated 5 out of 5
𝐆𝐎𝐃𝐃𝐄𝐒𝐒
365 users
Black-minimal-Blue Theme
Rated 3.6 out of 5
Newheron
571 users
Dark Metall 1717
Rated 4.5 out of 5
Albert Baum
14,914 users

Twitch extensions

BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
Rated 4.6 out of 5
NightDev
490,689 users
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
Rated 4.3 out of 5
Alexander Choporov (CoolCmd)
36,086 users
Twitch Chat pronouns
Add Pronouns to Twitch Chat
Rated 3.4 out of 5
Alejo Pereyra
16,084 users
Unwanted Twitch
Hide unwanted streams, games, categories, channels and tags on: twitch.tv
Rated 4.2 out of 5
kwaschny.net
5,834 users

“scholar” tagged extensions

Web Archives
View archived and cached versions of web pages on various search engines, such as the Wayback Machine and Archive․is.
Rated 4.7 out of 5
Armin Sebastian
67,349 users
Google Scholar Button
Lookup scholarly articles as you browse the web.
Rated 4.5 out of 5
Alex Verstak, Google
110,601 users
Pix Companion
Browser extension for Pix
Rated 2.1 out of 5
Groupement d’intérêt public « Pix »
85,751 users
Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
Rated 4.3 out of 5
Impactstory team
73,087 users