Add-ons for Firefox (en-CA)

BY FIREFOX

Firefox Multi-Account Containers

Keep parts of your online life separated into colour-coded and cookie-separated tabs. Now integrated with Mozilla VPN for an extra layer of privacy.

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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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Privacy & Security extensions

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Essential add-ons

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Reddit extensions

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Recommended extensions

EPUBReader
Read ePub files right in Firefox. No additional software needed!
Rated 3.7 out of 5
epubreader
127,548 users
Undo Close Tab
Allows you to restore the tab you just closed with a single click—plus it can offer a list of recently closed tabs within a convenient context menu.
Rated 4.7 out of 5
Manuel Reimer
43,970 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
Rated 4.7 out of 5
Maxime RF
645,977 users
Audio Equalizer
Stylish audio equalizer in toolbar popup.
Rated 4.1 out of 5
Muyor
38,861 users

Top rated themes

Kirby9
Rated 5 out of 5
＼(^o^)／
9,601 users
Praise the sun (animated)
Rated 4.9 out of 5
anon
16,159 users
Nyan Cat (Animated)
Rated 5 out of 5
Jnue
3,967 users

Tab managers

Tree Style Tab
Show tabs like a tree.
Rated 4.5 out of 5
Piro (piro_or)
203,135 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
Rated 4.2 out of 5
OneTab Team
163,127 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4 out of 5
Drive4ik
95,830 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
137,788 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
9,244,854 users
Video DownloadHelper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
Paul
1,811,560 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,792,887 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
1,370,575 users

Recommended themes

Nuances bleues - Shades of blue
Rated 3.6 out of 5
Dianen
306 users
Gruvbox Material Soft Theme
Rated 5 out of 5
Bullfinch
2,081 users
златни рибки
Rated 5 out of 5
rositza
51 users

Creativity extensions

Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
Rated 4.7 out of 5
LanguageTooler GmbH
369,922 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
Rated 4.6 out of 5
Armin Sebastian
390,927 users
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
Rated 4.8 out of 5
James Anderson
105,312 users
Dark Background and Light Text
Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.
Rated 4.5 out of 5
Mikhail Khvoinitsky
42,976 users

“dailymotion” tagged extensions

Video DownloadHelper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
Paul
1,811,560 users
Turn Off the Lights for Firefox
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
Rated 4.6 out of 5
Stefan vd
45,839 users
Download Video and Flash - HD Download
Download Video and Flash - HD Download is a great download helper tool that lets you download video and Flash games very easily. Download from YouTube, Facebook, Dailymotion, Vimeo and more. Download and enjoy! Download now!
Rated 3.7 out of 5
Download Flash and Video Team
58,840 users
Watch2Gether
With Watch2Gether you can watch videos together with your friends. Enhance your Watch2Gether experience with our official browser extension.
Rated 4.2 out of 5
Watch2Gether
54,944 users

Firefox Multi-Account Containers

Extensions are like apps for Firefox.

epubreader

127,548 users

Manuel Reimer

43,970 users

Maxime RF

645,977 users

Muyor

38,861 users

＼(^o^)／

9,601 users

anon

16,159 users

Jnue

3,967 users

Piro (piro_or)

203,135 users

OneTab Team

163,127 users

Drive4ik

95,830 users

sienori

137,788 users

Raymond Hill

9,244,854 users

Paul

1,811,560 users

EFF Technologists

1,792,887 users

Adguard Software Ltd

1,370,575 users

Dianen

306 users

Bullfinch

2,081 users

rositza

51 users

LanguageTooler GmbH

369,922 users

Armin Sebastian

390,927 users

James Anderson

105,312 users

Mikhail Khvoinitsky

42,976 users

Paul

1,811,560 users

Stefan vd

45,839 users

Download Flash and Video Team

58,840 users

Watch2Gether

54,944 users

Change the way Firefox looks with themes.