Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
192,009 users
Browsing Protection by F-Secure
Extension for protecting encrypted browsing with security products by F-Secure.
189,783 users
Video Downloader professional
- download and save videos embedded into a website to your hard disk - add youtube, vimeo and other videos easily to your video list - supports up to 4k videos
187,078 users
German Dictionary (Switzerland)
Dictionary with Swiss variants of German words for spellchecking in Firefox.
184,806 users
React Developer Tools
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
184,720 users
German Dictionary, extended for Austria
German dictionary ("new" orthography) for spellchecking in Firefox, extended with Austrian words
184,227 users
Language: Türkçe (Turkish)
Firefox Language Pack for Türkçe (tr) – Turkish
183,601 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
Language: Български (Bulgarian)
Firefox Language Pack for Български (bg) – Bulgarian
181,275 users
Avast Online Security & Privacy
Secure your Mozilla Firefox browser against real-time online threats, trackers, and scams. We’ll check every site you visit, from Facebook to your bank, so nothing puts you or your data at risk. Join a growing community of 400 million Avast users.
179,924 users
Language: Slovenčina (Slovak)
Firefox Language Pack for Slovenčina (sk) – Slovak
177,926 users
Pinterest Save Button
Save your favorite ideas online so you can easily get back to them later.
173,714 users
Language: ไทย (Thai)
Firefox Language Pack for ไทย (th) – Thai
168,262 users
164,692 users
Language: עברית (Hebrew)
Firefox Language Pack for עברית (he) – Hebrew
164,121 users
Hoxx VPN Proxy
Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.
163,395 users
Language: Lietuvių (Lithuanian)
Firefox Language Pack for Lietuvių (lt) – Lithuanian
162,723 users
Maps Assist & Custom Web Search
Install the Maps Assist & Custom Web Search extension to get directions by clicking the favicon on the toolbar & enjoy Yahoo® search from your browser.
162,472 users
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
162,360 users
Language: Cрпски (Serbian)
Firefox Language Pack for Cрпски (sr) – Serbian
161,885 users
Language: Slovenščina (Slovenian)
Firefox Language Pack for Slovenščina (sl) – Slovenian
161,375 users
FireShot: Full Web Page Screenshots (♥♥♥♥♥)
FireShot makes full page screen captures - http://bit.ly/RlBQMV Screenshots are quickly captured and: ― Saved as Image / PDF with links and text ― Sent to clipboard ― Printed Capture all open tabs or provide a list of the URLs for grabbing
160,316 users
Language: فارسی (Persian)
Firefox Language Pack for فارسی (fa) – Persian
159,618 users
Language: Eesti (Estonian)
Firefox Language Pack for Eesti (et) – Estonian
158,915 users
158,515 users