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.
5,464 users
Pokémon Showdown Randbats Tooltip
Enhanced Tooltip functionality for Pokémon Showdown Random Battle formats.
5,388 users
Dark Theme for Google™
A highly customizable dark theme for Google products (search, images, translate, and contacts)
5,377 users
Full Screen for Firefox
Go full screen with one click on the full screen button. That includes also the full screen movies such as the YouTube, Vimeo, Dailymotion, Youku video player, etc.
5,356 users
DjVu.js Viewer
The extension is a local copy of the DjVu.js Viewer which is available on https://djvu.js.org/. It allows you to open links to .djvu files right in the browser and .djvu files from a local drive. Also, it processes tag with .djvu files.
5,286 users
AiBlock for Youtube
Filter AI-generated content on YouTube. Community-powered blocklist with customizable warning and hiding modes.
5,111 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.
5,019 users
Claude in Sidebar
Chat with Claude AI directly in your browser sidebar. Summarize articles, explain code, translate pages, and get instant answers without switching tabs.
5,009 users
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.
4,969 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.
4,967 users
RYS — Remove YouTube Suggestions
Stop the YouTube rabbit hole. Customize YouTube's user interface to be less engaging.
4,911 users
YouTube LiveChat Flusher (Danmaku Chat)
Revolutionize your YouTube viewing experience with Danmaku-style chat.
4,841 users
Better Lyrics (Lyrics for Youtube Music)
Enhance YouTube Music with beautiful time-synced lyrics, multilingual support, real-time translations and more
4,827 users
BetterBLOX - Better Roblox Extension
See when any Roblox user was last online, pick your server region, and reskin the whole site — free with BetterBLOX.
4,811 users
Better Darker Docs
Gives Google Docs, Sheets, Slides, and Drawings a proper dark mode based on system theme, plus clearer text
4,744 users
