Firefox add-ons with Featured badge in Firefox Browser Add-ons

Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.

There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.

To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.

143 results. Page 1 of 6.
#1 uBlock Origin uBlock Origin
Publisher: Raymond Hill
User count: 6,190,788
Rating: 14,657
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
#2 Video DownloadHelper Video DownloadHelper
Publisher: mig
User count: 1,991,940
Rating: 22,493
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
#3 AdBlocker Ultimate AdBlocker Ultimate
Publisher: AdAvoid
User count: 1,945,173
Rating: 18,234
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
#4 DuckDuckGo Privacy Essentials DuckDuckGo Privacy Essentials
Publisher: DuckDuckGo
User count: 1,661,007
Rating: 1,804
Simple and seamless privacy protection for your browser: tracker blocking, cookie protection, DuckDuckGo private search, email protection, HTTPS upgrading, and much more.
#5 Ghostery – Privacy Ad Blocker Ghostery – Privacy Ad Blocker
Publisher: Ghostery
User count: 1,143,471
Rating: 3,819
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
#6 Privacy Badger Privacy Badger
User count: 1,092,081
Rating: 2,142
Automatically learns to block invisible trackers.
#7 To Google Translate To Google Translate
Publisher: Juan Escobar
User count: 988,553
Rating: 3,116
Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.
#8 Dark Reader Dark Reader
Publisher: Alexander Shutau
User count: 923,334
Rating: 4,721
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
#9 AdGuard AdBlocker AdGuard AdBlocker
User count: 868,590
Rating: 4,766
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
#10 LastPass Password Manager LastPass Password Manager
Publisher: LastPass
User count: 732,435
Rating: 7,706
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
#11 Enhancer for YouTube™ Enhancer for YouTube™
Publisher: Maxime RF
User count: 699,649
Rating: 9,846
Take control of YouTube and boost your user experience!
#12 Easy Youtube Video Downloader Express Easy Youtube Video Downloader Express
Publisher: Dishita
User count: 591,012
Rating: 12,722
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
#13 Bitwarden - Free Password Manager Bitwarden - Free Password Manager
Publisher: Bitwarden Inc.
User count: 554,029
Rating: 6,504
A secure and free password manager for all of your devices.
#14 AdBlocker for YouTube™ AdBlocker for YouTube™
Publisher: AdblockLite
User count: 484,851
Rating: 753
Remove all annoying ads from YouTube.
#15 Return YouTube Dislike Return YouTube Dislike
Publisher: Dmitry Selivanov
User count: 402,637
Rating: 2,738
Returns ability to see dislike statistics on youtube
#16 NoScript Security Suite NoScript Security Suite
Publisher: Giorgio Maone
User count: 332,376
Rating: 2,009
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.
#17 I don't care about cookies I don't care about cookies
Publisher: Kiko
User count: 313,257
Rating: 1,397
Get rid of cookie warnings from almost all websites!
#18 Decentraleyes Decentraleyes
Publisher: Thomas Rientjes
User count: 258,991
Rating: 1,300
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.
#19 SponsorBlock - Skip Sponsorships on YouTube SponsorBlock - Skip Sponsorships on YouTube
User count: 250,045
Rating: 1,569
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:
#20 Search by Image Search by Image
Publisher: Armin Sebastian
User count: 243,937
Rating: 1,203
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
#21 Grammar and Spell Checker - LanguageTool Grammar and Spell Checker - LanguageTool
User count: 236,675
Rating: 3,157
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.
#22 DownThemAll! DownThemAll!
Publisher: Nils Maier
User count: 221,614
Rating: 737
The Mass Downloader for your browser
#23 Simple Translate Simple Translate
Publisher: sienori
User count: 209,570
Rating: 1,499
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
#24 FoxyProxy Standard FoxyProxy Standard
Publisher: Eric H. Jung
User count: 200,089
Rating: 630
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
143 results. Page 1 of 6.