HackBar V2
[No License, FOREVER FREE] HackBar for new firefox Rework of it using vue.js and maniferst V3.
6,452 users
SmartProxy
SmartProxy is a smart automatic proxy switcher that will automatically enable/disable proxy for the sites you visit, based on customizable rules.
6,441 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.
6,407 users
HeadingsMap
The extension generates a document-map or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.
6,307 users
Html Validator
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.
6,165 users
Dark Mode - Night Eye
With Dark Mode - Night Eye, you can easily switch websites between dark and light mode as desired to take care of your eyes and reduce eye strain. Make your online experience more comfortable and enjoyable with this simple and convenient tool.
6,091 users
ruler
Simple tool for measuring arbitrary parts of a page. Does not and will never contain adware.
6,036 users
simple-modify-headers
The extension rewrite the header (request or response) based on a rules table. It 's possible to add, modify or remove header fields for a choosen url pattern. It's possible to import/export the configuration
5,999 users
polkadot{.js} extension
Manage your Polkadot accounts outside of dapps. Injects the accounts and allows signs transactions for a specific account.
5,959 users
Ui.Vision
Open-source Ui.Vision is RPA software for task & test automation. It is 3 tools in 1: Visual BROWSER automation with Selenium IDE import/export, 2: Visual DESKTOP automation and 3: (optional) Prompting with integrated Anthropic Claude Computer Use
5,935 users
Always active Window (Always Visible)
Pretend that all browser windows are active by spoofing the visibility state event
5,874 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+.
5,777 users
All Downloader Professional
All Downloader Professional finds links, images, videos, documents on a website an make them downloadable.
5,727 users
FoxyProxy Basic
FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.
5,646 users
Live Server Web Extension
Live Reload feature for Dynamic content (PHP, Node.js, ASPNET - Whatever, it doesn't matter). This extension is for Live Server - VSCode Extension (required v3.0.0+).
5,488 users
Full Screen for Firefox
Go full screen with one click on the full screen button. That includes also the full screen movies such as the YouTube, Vimeo, Dailymotion, Youku video player, etc.
5,291 users
Native MPEG-Dash + HLS Playback
Allow the browser to play HLS (m3u8) or MPEG-Dash (mpd) video urls 'natively'. This is a fork of Native HLS with additional features. Click on any m3u8 or mpd link inside Firefox to play it directly in a new tab
5,066 users
Force Copy
Force Copy professionally circumvents limitations pertaining to Web Copying, Keyboard Usage, and Right-click Functionalities, facilitating an unhindered browsing experience. Open Source Project: https://github.com/WindrunnerMax/TKScript.
5,063 users
Google Analytics Opt-out
Prevents the Google Analytics and Tag Manager's JavaScript APIs from collecting data and recording the user
5,043 users
Mobile DevTools
an extension that adds Eruda developer tools to Firefox Android. Lets you use the console, inspect elements, and network monitor on your phone
4,966 users
