Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
10,867 users
All Downloader Professional
All Downloader Professional finds links, images, videos, documents on a website an make them downloadable.
10,684 users
ruler
Simple tool for measuring arbitrary parts of a page. Does not and will never contain adware.
10,612 users
Allow Right-Click
Re-enable the possibility to use the context menu on sites that overrides it
9,853 users
cookies.txt
Exports all cookies to a Netscape HTTP Cookie File, as used by curl, wget, and youtube-dl, among others.
9,811 users
BuiltWith
BuiltWith is a web site profiler tool. Upon looking up a page, BuiltWith returns a list all the technologies in use on that page that it can find.
9,778 users
Page Saver WE screenshot capture tool
Quickly and easily capture an image of a web page. Options allow you to control output format (PNG or JPEG), file name and more.
9,749 users
Mouse Gesture Events
Control your browser faster and easier with gestures using mouse movement.
9,174 users
Hide My IP VPN
Hide My IP VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older Hide My IP VPN from "Version History" (https://goo.gl/7ZQQjZ)
8,989 users
Form History Control
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
8,638 users
Google Analytics Blocker
Block Google Analytics in any website. If you are a developer and you do not want to watch your own visits on your page or you are just a web user that you do not want pages analyse you, this extension is for you.
8,293 users
MVPN
Focus on Asia Pacific,We are focused on providing high-speed Internet acceleration services to the people of the asia-pacific region.
7,771 users
Canvas Defender
Instead of completely blocking canvas fingerprinting, Canvas Defender add-on creates a unique and persistent noise that hides your real canvas fingerprint. This add-on protects you while browsing both in normal and private mode.
7,625 users
WebScrapBook
Capture web pages to local device or backend server for future retrieval, organization, annotation, and edit.
7,470 users
Fake Filler
A form filler that fills all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with fake and randomly generated data. The purpose of this extension is to help developers and testers test forms quickly and easily.
7,367 users
Zoom for Firefox
Zoom in or out on web content using the zoom button and mouse scroll wheel for more comfortable reading. That to each percent value. It helps you to zoom easily in and out a web page. Thanks to the slider and the zoom buttons.
7,362 users
EditThisCookie2
EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!
7,334 users
JavaScript Switcher
A lightweight addon that adds a Toggle button in URL bar, for toggling JavaScript (on or off) individually per domain, and stores that for future visit. Works also with Firefox 57+.
6,930 users
HTTP request maker
Displays a sidebar that lets you to forge HTTP requests. Press Ctrl+Shift+Y to show the sidebar and make your own HTTP request. You can choose the method GET, HEAD, POST, OPTIONS, PUT DELETE and the body data to send. Response in the main window.
6,903 users
Night Eye - Dark mode on any website
Night Eye enables night mode on any website using new algorithm that analyses and converts all colours instead of inverting them.
6,858 users
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
6,843 users
