PixelZoomer
PixelZoomer takes a screenshot of the current website and provides various tools for pixel analysis. You can zoom into websites (up to 3200%), measure distances and pick colors with an eye dropper.
1,879 users
LightSession Pro for ChatGPT
Fix slow, laggy ChatGPT tabs in Firefox. Local-only extension that speeds up long conversations by trimming old messages from the page (no data leaves your browser).
1,861 users
Asciidoctor.js Live Preview
Render AsciiDoc (.ad, .adoc, .asciidoc) as HTML inside Firefox!
1,858 users
Dark Night Mode
It is a universal night mode for the entire Internet. It uses a special algorithm to automatically change the colors of the websites you visit into dark mode so that you can browse without straining your eyes, especially at night.
1,855 users
Link Extractor
Modern Web Extension to extract, parse, and open links from any site or text with optional filters.
1,851 users
Free Visio Viewer (Mac, Windows, Linux)
Open your Microsoft Visio files for free
1,837 users
Xdebug-ext
Adds a simple button to inject a Xdebug cookie. Compatible with Firefox 57+ (Quantum). It is a port of "The easiest Xdebug" Addon by Nikita Nikitin, which is not compatible with WebExtensions.
1,829 users
Clear Site Cookies
Clear the cookies of the current website, with cookie preview and precise cookie selection.
1,827 users
Feature Queries Manager
Manage and toggle CSS on a page behind a @supports Feature Query.
1,807 users
FireMonkey
Super Lightweight User Script and Style Manager
1,806 users
View Page Source (Mobile)
Adds the ability to open the page source in a new tab via button (Desktop) or menu (Firefox for Android).
1,777 users
Image saver
Save any images in page directly from context menu, this includes svg elements, css background images and direct child images.
1,773 users
JSON-formatter
Fast JSON formatting.
1,769 users
Enable Selection and Copy
Force enable text selection and copy. (mod by Gary) This is modded from another well-known addon and makes it function on local files also. Nothing else changed.
1,754 users
Remove Cookies Button
Toolbar button for removing cookies, local storage and session storage from the current tab. The button displays a number of deleted cookies (shown in the screenshot). In case of deletion problems button displays word "Error" and shows notification.
1,753 users
Extended Color Management
Ever wish that Firefox didn't use color management when viewing images or video? Turn it off easily with this add-on.
1,748 users
GreenIT-Analysis
GreenIT-Analysis : Measure EcoIndex(www.ecoindex.fr) and check ecometer best practice (www.ecometer.org)
1,747 users
Siteimprove Accessibility Checker
Jumpstart your web accessibility efforts directly in Firefox. Is your web page accessible for everyone? Assess the accessibility of your web pages conveniently in Mozilla Firefox browser with the Siteimprove Accessibility Checker.
1,735 users
APK Downloader
APK Downloader Direct download apps of the Google apps store without using Google Play.
1,732 users
Code Injector
Inject code into websites! (JavaScript, CSS, HTML and Files)
1,708 users
AWS SSO Containers
Automatically places AWS SSO accounts into containers.
1,697 users
Run JavaScript
Script injector for JavaScript and CSS!
1,696 users
DevTools Media Panel
DevTools panel that displays technical details about media elements and webrtc on the current page; intended primarily for web developers to understand media playback issues on their sites, and for users to provide more informative bug reports.
1,685 users
Youtube Play All
Adds a 'Play All' button to YouTube, allowing video playback in Latest, Popular, or Oldest order.
1,667 users
Load Time
Adds an icon to the address bar to provide load time information of the current page.
1,658 users