Full Page Screenshotter
Capture full-page screenshots in Firefox, including scrolling and app-style pages. Fast, local, private — no tracking or uploads.
864 users
Simple Link Checker
Redirect Link Checker will check all links on your page to find broken and redirect links
854 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.
843 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.
833 users
Neeno's Cookie Importer
Import, export, edit, and backup cookies. Includes conflict resolution, cookie locking, advanced flag editing, session snapshots, and a secure review stage. Supports incognito and containers. The definitive session management tool.
827 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
825 users
LocalStorage Editor
Add, edit, copy, remove, export and import local- and session- storage data
815 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.
814 users
Website and IP address blocker
Block Websites and IP address. Additional feature: Option to only block the homepage.
810 users
React Context DevTool
React Context DevTool is a debugging tool for React Context and useReducer API.
806 users
Disable CSP for a minute
Temporarily disables CSP for the current tab's website. Right click on the page, then disable CSP.
806 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.
801 users
SiteAnalyzer SEO Tools
SiteAnalyzer SEO Tools is a browser extension providing a set of tools for analyzing SEO indicators of web site, technical audit (links, images, meta tags, content, indexing, etc.), URL analysis and correction of SEO optimization errors.
798 users
Transparent standalone images
This add-on renders standalone images on a transparent background, so you can see the image in all its glory!
794 users
Block Yourself from Analytics
Block your Google Analytics™ activity for the websites you own, no more false stats.
783 users
Flash Debugger
Debug Flash/SWF/Flex files on the web. Edit properties and inspect elements on the fly. View log output inside the extension. Run AS3 code against the active SWF. Profile memory consumption and much much more...
779 users
