Request Interceptor
Intercept HTTP and HTTPS Requests. Add custom rules to modify request/response headers, block/redirect requests, modify query params. Example Usage: This extension can be used to block all ads having url (*/ad.x.com/*) by creating rules
657 users
Code Editor
Powered by the Monaco Editor, it provides support for basic syntax colorization, IntelliSense, validation and Diff Editor features.
651 users
Penetration Testing Kit
Attention! This version is no longer supported. Use /firefox/addon/owasp-penetration-testing-kit/ extension instead.
649 users
Github Repository Size
Add repositories size to their GitHub summary band using the GitHub public API.
640 users
Google Cache
Google Cache lets you visit retrieve the web page from Google Web Cache when the site is offline.
639 users
Temporary Email - EmailOnDeck
Superior Temporary Email Solutions - Extension does not track, read or view the websites you visit.
629 users
FxIF
View exIF allows you to view metadata contained in .jpg and .tiff images from your Firefox browser.
621 users
New Tab Same Group
Opens new tabs in the same group as the active one — right after, at the beginning, or at the end. Supports Firefox’s native tab groups, vertical (sidebar) or horizontal (classic) modes.
616 users
Adaptive Darkmode
A simple add-on that lets you pick and choose what sites to apply a slick, dark mode to.
603 users
Le Git Graph - GitHub Git Graph
A browser extension that displays the git graph for any GitHub repository.
599 users
IP Geolocator
Shows detailed information about your IPv4 & IPv6 address and their location.
598 users
Simple Lorem Ipsum
This extension lets you insert Lorem Ipsum anywhere on your page with an edit mode to modify any content on your page.
596 users
OurStickys - Sticky Notes on every page
Add Persistent Sticky Notes anywhere on any web page, they will reappear when you re-open the page
592 users
Reading List/ Reading History Exporter
Export your lists and reading history to CSV, HTML, JSON, or PDF.
587 users
Bootstrap - Responsive Helper
Show the Bootstrap grid class currently active (XS, SM, MD, LG, XL, XXL). Tested and work with the versions: 3, 4, 5 Not compatible versions: 4 Alpha 2
586 users
Tweeks - Customize Any Website
Personalize sites you use every day with Tweeks. Make the web work your way.
578 users
