YouTube Search Fixer
Remove ALL distracting search results, redirect shorts back to legacy page and try little visual changes suited for low resolution screens.
32,052 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.
30,465 users
Yomitan
Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.
28,702 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.
27,876 users
Copy PlainText
Copy Plain Text without any formatting
26,749 users
Checker Plus for Gmail™
Get desktop notifications, read, listen or delete emails without opening Gmail or Inbox by Gmail & easily manage multiple accounts.
23,112 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
22,446 users
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.
20,774 users
Custom Scrollbars
Give Firefox a personal touch with customized scrollbars!
18,777 users
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
18,330 users
Snap Links Plus
Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.
16,680 users
automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
12,816 users
ScrollAnywhere
Scroll page without touching scroll-bar! Press Middle (Right / Left) mouse button anywhere on the page to scroll just like with scrollbar. Features also: - "grab and drag" scrolling - customizable scrollbars! - the Momentum auto-scroll
12,142 users
Stylebot
Change the appearance of the web instantly
9,465 users
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
768,263 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
303,021 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
264,776 users
Firefox Color
Build, save and share beautiful Firefox themes.
112,437 users
I still don't care about cookies
Community version of the popular extension "I don't care about cookies" https://github.com/OhMyGuus/I-Dont-Care-About-Cookies
101,391 users
Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
97,446 users
Cookie-Editor
Cookie-Editor lets you efficiently create, edit and delete a cookie for the current tab. Perfect for developing, quickly testing or even manually managing your cookies for your privacy.
90,280 users
Plasma Integration
Multitask efficiently by controlling browser functions from the Plasma desktop.
77,378 users
BTRoblox - Making Roblox Better
BTRoblox, or Better Roblox, is an extension that aims to enhance Roblox's website by modifying the look and adding to the core website functionality by adding a plethora of new features.
74,250 users
Vue.js devtools
DevTools extension for debugging Vue.js applications.
63,272 users
Old Reddit Redirect
Ensure Reddit always loads the old design
63,267 users