Explore powerful tools and features to customise Firefox and make the browser all your own. Alerts & Updates Download Management Feeds, News & Blogging Games & Entertainment Language Support Photos, Music & Videos Privacy & Security Social & Communication Web Development Measure-it Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels. Rated 4.4 out of 5 Trishul 20,091 users Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels. NoScript Security Suite The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits. Rated 4.4 out of 5 Giorgio Maone 238,665 users NoScript Security Suite The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits. DuckDuckGo Search & Tracker Protection ⚡Protects your data. Private search with optional AI, private browsing, and ad blocking. Rated 4.3 out of 5 DuckDuckGo 1,056,634 users DuckDuckGo Search & Tracker Protection ⚡Protects your data. Private search with optional AI, private browsing, and ad blocking. 1,056,634 users Simple Tab Groups Create, modify, and quickly change tab groups Rated 4 out of 5 Drive4ik 62,738 users Simple Tab Groups Create, modify, and quickly change tab groups

Time Tracker - Web Habit Builder Track time, analyze your habits and block addictive sites Rated 4.9 out of 5 sheepie z 18,462 users Time Tracker - Web Habit Builder Track time, analyze your habits and block addictive sites SteamDB Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats. Rated 4.8 out of 5 SteamDB 112,752 users Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats. 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. Rated 4.8 out of 5 James Anderson 107,824 users 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. 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 Rated 4.8 out of 5 Ajay (SponsorBlock) 762,410 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 Ajay (SponsorBlock) Clear Browsing Data Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click. Rated 4.3 out of 5 Armin Sebastian 44,507 users Clear Browsing Data Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click. Armin Sebastian Stylebot Change the appearance of the web instantly Rated 4.8 out of 5 Ankit Ahuja 14,108 users Change the appearance of the web instantly automaticDark - Time-Based Theme Changer Automatically change Firefox's theme based on the time. Rated 4.3 out of 5 simonkhzhang 24,750 users automaticDark - Time-Based Theme Changer Automatically change Firefox's theme based on the time. Weather Extension The best way to see the weather right in your browser. Easier than looking outside! Rated 4.4 out of 5 Tim 19,960 users Weather Extension The best way to see the weather right in your browser. Easier than looking outside!