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.
29,018 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
28,092 users
PopUpOFF
Removes and prevents popups, overlays and cookie notifications, other tools do not. Enjoy the original look of the internet.
26,757 users
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
22,459 users
Emoji
It permits just with a single click to copy an emoji. There is a search-box and the "Most used emojis" section (the first one). If you want to send feedback or report bug, please contact me: https://www.emojiaddon.com/help
21,603 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.
18,997 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.
18,781 users
Forecastfox (fix version)
Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.
18,462 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
16,160 users
Stylebot
Change the appearance of the web instantly
13,588 users
Minimal Theme for 𝕏 / Twitter
Declutter and refine the 𝕏 / Twitter web experience.
13,425 users
automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
9,322 users
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
715,486 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
321,546 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
278,145 users
Firefox Color
Build, save and share beautiful Firefox themes.
120,122 users
Video Speed Controller
Speed up, slow down, advance and rewind any HTML5 video with quick shortcuts.
100,077 users
Vue.js devtools
DevTools extension for debugging Vue.js applications.
92,167 users
Plasma Integration
Multitask efficiently by controlling browser functions from the Plasma desktop.
71,101 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.
65,345 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
64,090 users
YouTube Downloader
Looking for youtube video downloader? Install the YouTube Downloader and download video from YouTube.
61,440 users
Dark Mode (WebExtension)
A global dark theme for the web
58,928 users
Proxy SwitchyOmega
Manage and switch between multiple proxies quickly & easily.
58,479 users
Old Reddit Redirect
Ensure Reddit always loads the old design
56,830 users