![](https://addons.mozilla.org/user-media/hero-featured-image/sharon-mccutcheon-TZZwC_xsClY-unsplash.jpg?modified=1602005393)
TinEye Reverse Image Search
Click on any image on the web to search for it on TinEye. Recommended by Firefox! Discover where an image came from, see how it is being used, check if modified versions exist or locate high resolution versions. Made with love by the TinEye team.
57 957 users
Livemarks
Get auto-updated RSS feed bookmark folders.
13 775 users
Block Site
A customizable, password-protected website blocker and redirector.
67 480 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
26 001 users
688 609 users
445 202 users
388 824 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
475 276 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
569 365 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
451 621 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!
127 033 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1 068 779 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
151 642 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
74 039 users
Dark Mode
Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.
31 551 users
495 users
4611 users
1975 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
342 167 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
328 379 users
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
64 259 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.
34 490 users
Global Speed
Set a default speed for video and audio.
59 221 users
划词翻译
一站式划词 / 截图 / 网页全文 / 音视频翻译扩展,支持谷歌、DeepL、ChatGPT、百度等 9 个国内外主流翻译服务,均可用于全文翻译。能在 PDF 里使用。支持辅助键、快捷键、悬浮取词。
57 268 users
Privacy Extension For WhatsApp™ Web
The Privacy Extension For WhatsApp™ Web hides your messages from unwanted glimpses until you hover over them. In the search bar, you can disable the blur effect on all messages manually and specify what elements to blur.
33 411 users
KeepSolid VPN Unlimited
VPN Unlimited - reliable, easy-to-use, and lightning-fast VPN extension for Firefox browser
4244 users