Fake Data - A form filler you won't hate
Fill form fields on the fly with fake random data. No configuration needed, just double click on each input you want to fill. Has an autolearn feature for unrecognised fields.
2,199 users
Laboratory (Content Security Policy / CSP Toolkit)
Because good website security shouldn't only be available to mad scientists! Laboratory is a WebExtension that helps you generate a Content Security Policy (CSP) header for your website.
2,132 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.
2,128 users
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.
2,059 users
PDF Combine - Convert and Merge
Convert and merge multiple files with different formats into a single PDF document
2,056 users
Squarespace ID Finder
Find the ids of collections, sections, and blocks on your Squarespace page. Works with both 7.0 and 7.1.
2,055 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.
2,018 users
Broken Link Checker
A SEO tool to find broken (404) and redirected (301, 307, 308) links in all frames
2,011 users
Image saver
Save any images in page directly from context menu, this includes svg elements, css background images and direct child images.
2,008 users
Infy Scroll - A Next Page AutoPager
Add customized infinite scrolling to websites and auto load the next page. Supports the AutoPagerize and InfyScroll Databases.
1,995 users
Amadeus Digital DNA Extension
The Amadeus Digital DNA Extension provides end-users the ability to authenticate on some dedicated Amadeus web applications with a second factor.
1,976 users
Load Time
Adds an icon to the address bar to provide load time information of the current page.
1,970 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.
1,961 users
Asciidoctor.js Live Preview
Render AsciiDoc (.ad, .adoc, .asciidoc) as HTML inside Firefox!
1,952 users
Copy Selected Tabs to Clipboard
Provides ability to copy title and URL of selected tabs to the clipboard.
1,911 users
