LeechBlock NG
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
131,292 users
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
43,678 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
87,524 users
Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
150,760 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
77,322 users
YouTube Search Fixer
Remove ALL distracting search results, redirect shorts back to legacy page and try little visual changes suited for low resolution screens.
34,123 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1,289,688 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
205,412 users
Dark Mode
Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.
43,686 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
60,165 users
'Improve YouTube!' 🎧 (For YouTube & Video)
Youtube Extension. Powerful but lightweight. Enrich your Youtube and content selection. Make YouTube tidy and smart! (Layout, Filters, Shortcuts, Playlist)
107,641 users
Turn Off the Lights for Firefox
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
45,661 users
Adaptive Tab Bar Color
Changes the color of Firefox theme to match the website’s appearance.
36,489 users