uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
7,927,212 users
Block Site
A customizable, password-protected website blocker and redirector.
71,784 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,036,316 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
1,088,940 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.
68,665 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
480,703 users
CanvasBlocker
Alters some JS APIs to prevent fingerprinting.
25,625 users
Webmail Ad Blocker
Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
28,883 users
Popup Blocker (strict)
Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address
62,790 users
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
36,127 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
450,048 users
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
11,925 users
Video Background Play Fix
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
182,291 users
Adblock Plus
One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
3,777,004 users
AD Blocker add-on
Extension to block the ads.
99 users
Image Block
Image Block adds a toggle button that conditionally blocks/allows loading of images on webpages. Blocking images results in faster browsing, especially helpful on handheld devices or slower connections.
6,143 users
DuckDuckGo Privacy Essentials
Simple and seamless privacy protection for your browser: tracker blocking, cookie protection, DuckDuckGo private search, email protection, HTTPS upgrading, and much more.
1,499,293 users
Channel Blocker
Are you annoyed by YouTube™s video recommendations? Our Add-on enables the function of blocking anything you'd like. Block separate videos, users or whole channels with only one click!
8,414 users
BlockSite
BlockSite is an extension, which automatically blocks websites of your choice. Additionally, this extension will disable all hyperlinks to these websites, by just displaying the link text without the clicking functionality.
32,264 users
Disconnect
Make the web faster, more private, and more secure.
93,529 users
Block Site
Easily block websites of your choice!
7,001 users
AdBlock for Firefox
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
1,208,135 users
Anti-Adblock Blocker
Blocks common anti-adblock solutions Homepage: https://gitlab.com/aforementioned.dude/anti-adblock-blocker Report issues: https://gitlab.com/aforementioned.dude/anti-adblock-blocker/issues
6,742 users
Strict Pop-up Blocker
Quickly toggle between blocking all pop-up windows and allowing some pop-ups
28,972 users
AdBlocker Ultimate
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
2,198,508 users