show-my-ip
This add-on allows you to view your IP address from your browser without having to navigate to sites like https://www.whatismyip.com/ Furthermore, as this add-on is open source, you don't need to be worried about your privacy.
866 users
PageSpeed Insights
Open PageSpeed Insights to analyze the web page on the current opened tab.
865 users
Full Page Screenshotter
Capture full-page screenshots in Firefox, including scrolling and app-style pages. Fast, local, private — no tracking or uploads.
861 users
IP Whois
View info about IP, DNS records, SSL, country flag, domain whois, location, stats and more of any website.
852 users
React Context DevTool
React Context DevTool is a debugging tool for React Context and useReducer API.
835 users
AdBlock Bypass Detector & Popup Remover
Remove overlays, sticky headers, and anti-adblock walls. Includes Reader Mode, Dark Mode, and a custom Element Zapper
832 users
Simple Link Checker
Redirect Link Checker will check all links on your page to find broken and redirect links
830 users
Quick Accept-Language Switcher
Provides a quick way of changing the HTTP Accept-Language header so you can view and test websites with a different locale.
825 users
Slither.io Mods, Zoom, Unlock Skins, Bots
The Best Mod and Extension for Slither.io! Mod Zoom, Play with Friends, Skins, Custom Skins, Bots
823 users
Website and IP address blocker
Block Websites and IP address. Additional feature: Option to only block the homepage.
822 users
Time Travel
Fake the current date, time and time zone in JavaScript Date or Intl.DateTimeFormat objects. Time Travel helps you debug time-dependent frontend applications without having to change the system time.
817 users
Open With Photoshop
Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.
815 users
Transparent standalone images
This add-on renders standalone images on a transparent background, so you can see the image in all its glory!
808 users
OpenLorem
Lorem Ipsum filler text for web developers. Uses Loripsum, Bacon Ipsum and Dino Ipsum APIs to retrieve customized text. Insert into fields using context menu. Source code is available on Github.
797 users
LocalStorage Editor
Add, edit, copy, remove, export and import local- and session- storage data
797 users
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
793 users
