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.
5.101 Benutzer
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.
5.031 Benutzer
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.
4.977 Benutzer
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.
4.955 Benutzer
EuroSaver – Amazon Europa Preisvergleich
Vergleiche Preise zwischen allen europäischen Amazon Shops.
4.824 Benutzer
YouTube Popout Player
Provides a simple way to open any YouTube video in a popout window
4.722 Benutzer
YouTube LiveChat Flusher (Danmaku Chat)
Provides bullet chatting (danmaku) on YouTube Live, like niconico or bilibili.
4.718 Benutzer
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.
4.709 Benutzer
Copy Selected Links
Right-click selected text to copy the URL of any links it contains.
4.692 Benutzer
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.
4.684 Benutzer
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
4.676 Benutzer
Timer (alarm, timer and stopwatch)
Stylish timer combined with stopwatch and alarm for your browser.
4.607 Benutzer
RYS — Remove YouTube Suggestions
Stop the YouTube rabbit hole. Customize YouTube's user interface to be less engaging.
4.485 Benutzer
Better Darker Docs
Gives Google Docs, Sheets, Slides, and Drawings a proper dark mode based on system theme, plus clearer text
4.339 Benutzer
Sauce for Strava™
Additional functionality for your cycling and running analysis. This extension upgrades the Strava™ website.
4.323 Benutzer
