Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1,265,150 users
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
157,352 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.
104,974 users
Google Search Fixer
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
98,941 users
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
47,122 users
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
753,140 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
222,557 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
150,402 users
Absolute Enable Right Click & Copy
Force Enable Right Click & Copy
84,624 users
h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
68,245 users
Popup Blocker Ultimate
Best Pop-up Blocker for Firefox. (Best in Rating, Performance, This addon does NOT collect user's data same as Poper Blocker)If your Firefox version is not 57+ please install version 8.1 from Official website.
49,595 users
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
43,711 users
Adblock for Youtube™
Popular Adblock for Youtube™ Extension: Removes the video ads from Youtube™. Thanks to all AdBlock supporters!
35,953 users
BlockTube
YouTube™ Content Blocker Block channels and videos from YouTube™ Fast and easy
31,042 users
Mate Translate – translator, dictionary
Your all-in-one translator for web pages, highlighted text & Netflix subtitles. Translate and learn words in 103 languages.
18,179 users
Redirector
Automatically redirects to user-defined urls on certain pages
17,488 users
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
11,882 users
ChatGPT to PDF
Turn your chats into neatly formatted PDF.
9,182 users
Empty Cache Button
Cache clearing made easy. One click.
8,983 users
Page Assist - A Web UI for Local AI Models
Use your locally running AI models to assist you in your web browsing.
8,668 users
Scratch Addons
Scratch Addons provides customizable features and themes for the scratch.mit.edu website and project editor.
8,054 users
Pinned Google Calendar
Go to the pinned Google Calendar tab. If it doesn't exist, it's created.
7,470 users
Default Search with Anthropic
Ask Claude AI from your address bar. Summarize pages, answer questions, brainstorm ideas, and more. Claude AI, ChatGPT alternative, AI productivity.
7,306 users
Form History Control
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
6,506 users
WebScrapBook
Capture web pages to local device or backend server for future retrieval, organization, annotation, and edit.
6,435 users