![](https://addons.mozilla.org/user-media/hero-featured-image/joshua-sortino-R5cIKEopHWI-unsplash.jpg?modified=1602005110)
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!)
33,944 users
Video Background Play Fix
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
181,443 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
75,672 users
Dark Background and Light Text
Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.
39,200 users
508 users
942 users
19,126 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
463,083 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
569,119 users
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
439,399 users
YouTube NonStop
Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autoclicks it, so you can listen to your favorite music uninterrupted. Working on YouTube and YouTube Music!
129,625 users
767,078 users
497,285 users
440,320 users
To Google Translate
Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.
992,085 users
TWP - Translate Web Pages
Translate your page in real time using Google or Yandex. It is not necessary to open new tabs. Now works with the NoScript Extension.
652,619 users
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
309,566 users
ImTranslator: Translator, Dictionary, TTS
COMPLETELY REDESIGNED TRANSLATOR FOR FIREFOX ImTranslator translates text, words, webpages between more than 100 languages. NEW: Inline Translator, Dictionary, access to Google Translate, Microsoft Translator. Unique on the fly localization.
132,137 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
571,314 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
569,119 users
YouTube NonStop
Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autoclicks it, so you can listen to your favorite music uninterrupted. Working on YouTube and YouTube Music!
129,625 users
Block Site
A customizable, password-protected website blocker and redirector.
71,137 users