Theme Font & Size Changer
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
5,210 users
CAI Tools
Extra features for Character.AI. Background, Font and Memory Manager, chat/character cloning, import/export characters, save chats and more!
5,158 users
Quick Dial
Quick Dial, a speed dial page inspired from fast dial. Full Open Source, No Web Service, No Cloud Account, your data is your own.
5,081 users
EuroSaver - Amazon Europe Price Comparison
Simplifies Amazon product price comparison between all european Amazon stores.
4,968 users
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
4,850 users
Rotate Youtube Video (+ Zoom / Mirror, AB Loop)
You can rotate, zoom, mirror, or A-B loop the video. See the full details at the bottom of this page, or press the shortcut Ctrl + Shift + 1 after installing the add-on to open the add-on preferences.
4,822 users
Tridactyl
Vim, but in your browser. Replace Firefox's control mechanism with one modelled on Vim. This addon is very usable, but is in an early stage of development. We intend to implement the majority of Vimperator's features.
4,820 users
Fixed Zoom
Extension that sets a custom default zoom for all pages in Firefox. You can set a general zoom for all pages or custom rules depending on the site.
4,817 users
Mouse Gesture Events
Control your browser faster and easier with gestures using mouse movement.
4,751 users
RYS — Remove YouTube Suggestions
Stop the YouTube rabbit hole. Customize YouTube's user interface to be less engaging.
4,702 users
Timer (alarm, timer and stopwatch)
Stylish timer combined with stopwatch and alarm for your browser.
4,681 users
YouTube LiveChat Flusher (Danmaku Chat)
Provides bullet chatting (danmaku) on YouTube Live, like niconico or bilibili.
4,582 users
Sauce for Strava™
Additional functionality for your cycling and running analysis. This extension upgrades the Strava™ website.
4,485 users
Better Darker Docs
Gives Google Docs, Sheets, Slides, and Drawings a proper dark mode based on system theme, plus clearer text
4,391 users
