Add extensions, get work done

Allows all sites to be loaded in iframes, despite X-Frame-Options header settings.

Saves the current page as image file or copies it to clipboard.

Simplifies the GitHub interface and adds many useful features.

signTextJS plus

window.crypto.signText replacement plus enhancements

Emoji Keyboard - Emojis For Firefox

A free extension of the web tool https://coolsymbol.com/emojis/emoji-for-copy-and-paste.html. It helps input emoji in the web browser with an extensive search functionality.

Add accessibility auditing to the Firefox Developer Tools

EditThisCookie is a cookie manager. You can add, delete, edit, search, protect and block cookies!

BuiltWith is a web site profiler tool. Upon looking up a page, BuiltWith returns a list all the technologies in use on that page that it can find.

Html Validator

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon For Firefox 56, use 0.974 (see all versions below). For Firefox 57, see Web Extensions.

Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.

HackBar

A HackBar for new firefox (Firefox Quantum). This addon is written in webextension and alternatives to the XUL version of original Hackbar. Press F12 to use HackBar

Find and download all images on a web page.

Quickly and easily capture an image of a web page. Options allow you to control output format (PNG or JPEG), file name and more.

Purple AdBlock is a adblock for Twitch.tv

GraphQL debugging tools for Apollo Client.

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller. Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

Simple tool for measuring arbitrary parts of a page. Does not and will never contain adware.

All Downloader Professional finds links, images, videos, documents on a website an make them downloadable.

Capture web pages to local device or backend server for future retrieval, organization, annotation, and edit.

Removes cookies for the current site

No more CORS error by appending 'Access-Control-Allow-Origin: *' header to local and remote web requests when enabled

A lightweight addon that adds a Toggle button in URL bar, for toggling JavaScript (on or off) individually per domain, and stores that for future visit. Works also with Firefox 57+.

With Night Eye, you can easily switch websites between dark and light mode as desired to take care of your eyes and reduce eye strain. Make your online experience more comfortable and enjoyable with this simple and convenient tool.