16,141 extensions found in Appearance

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FoxScroller
Auto scroll web pages with fully adjustable speed.
Rated 4.6 out of 5
Simalleus
5,298 users
Adless Spotify
Mutes Spotify's Webplayer when advertisements are played.
Rated 4.8 out of 5
NCIH
5,195 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.
Rated 2.2 out of 5
Baris Derin
5,152 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.
Rated 4.2 out of 5
matmoul
5,152 users
Yandex Evolution - Поиск Яндекс
Popular Russian search engine by Yandex (Яndex, Яндекс)
Rated 3.3 out of 5
Savevur
5,054 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.
Rated 4.3 out of 5
znwyrz
5,043 users
ePUB Reader
View ePUB files right in your browser in a popup window.
Rated 3.6 out of 5
Sevina
5,010 users
EuroSaver - Amazon Europe Price Comparison
Simplifies Amazon product price comparison between all european Amazon stores.
Rated 4.8 out of 5
Foundere Developer
4,983 users
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
Rated 4 out of 5
Whatruns
4,878 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.
Rated 4.9 out of 5
Colin Caine
4,860 users
Mouse Gesture Events
Control your browser faster and easier with gestures using mouse movement.
Rated 4 out of 5
Simpler
4,849 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.
Rated 4.5 out of 5
Ariel
4,827 users
Force Dark Mode
Toggle dark mode on and off on any website.
Rated 3.8 out of 5
Stuff7
4,827 users
Copy Selected Links
Right-click selected text to copy the URL of any links it contains.
Rated 4.8 out of 5
Marnes
4,809 users
YouTube Popout Player
Provides a simple way to open any YouTube video in a popout window
Rated 4.2 out of 5
Ryan Thaut
4,806 users
Timer (alarm, timer and stopwatch)
Stylish timer combined with stopwatch and alarm for your browser.
Rated 4.1 out of 5
Karl
4,769 users
YouTube LiveChat Flusher (Danmaku Chat)
Provides bullet chatting (danmaku) on YouTube Live, like niconico or bilibili.
Rated 4.8 out of 5
_y_s
4,720 users
View Page Source
View the source code of a page with the click of a button.
Rated 4.4 out of 5
Jeurissen Apps
4,652 users
RYS — Remove YouTube Suggestions
Stop the YouTube rabbit hole. Customize YouTube's user interface to be less engaging.
Rated 4.2 out of 5
Lawrence
4,556 users
Page Screenshot
Take a screenshot from the entire website with just one click.
Rated 2.8 out of 5
Bernard
4,539 users
YTBlock - Block any content from YouTube™
Block any unwanted content from YouTube™
Rated 4.2 out of 5
Edoan
4,536 users
Sauce for Strava™
Additional functionality for your cycling and running analysis. This extension upgrades the Strava™ website.
Rated 4.4 out of 5
Justin Mayfield
4,486 users
Reload All Tabs
Reload all tabs using keyboard shortcut or toolbar button.
Rated 4.2 out of 5
Glin
4,456 users
Window Resizer
Easily set the layout (size & position) of your browser window
Rated 2.9 out of 5
Kelvin
4,423 users
Better Darker Docs
Gives Google Docs, Sheets, Slides, and Drawings a proper dark mode based on system theme, plus clearer text
Rated 3.9 out of 5
red
4,383 users