Saves the current page as image file or copies it to clipboard.
MIDI support for browsers
Firebug extension for web analytics testing and debugging
The easiest way to capture, share, and bookmark from the web.
Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.
Purple AdBlock is a adblock for Twitch.tv
Download login-protected files from the command line using curl, wget or aria2.
The extension generates a document-map or index of any web document structured with headings and/or with sections in HTML 5. It shows the headings structure, the errors in the structure (ie. incorrect levels), and it works as HTML5 Outliner too.
Selenium IDE alternative to record and export Selenium scripts. Provides reports & screenshots. Fast & open-sourced.
Allows to change the language identifier sent to webservers to whatever language you need.
Removes cookies for the current site
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.
Web extension based version of LiveReload. Supports Firefox 57 (Firefox Quantum)
Pretty XML is a browser-based XML viewer
Display the server IP address, with a realtime summary of IPv4, IPv6, and HTTPS information across all page elements. (This is primarily a Chrome extension, so it's a bit glitchy due to Firefox's inexact implementation of the APIs.)
Go full screen with one click on the full screen button. That includes also the full screen movies such as the YouTube, Vimeo, Dailymotion, Youku video player, etc.
Free YouTube Download Button allows you to save YouTube video and audio files just in 1 click
Construct custom Web Socket requests and handle responses to directly test your Web Socket services.
Adds a page action to pretty-print JSON. Unlike similar extensions, this simply pretty-prints it. It doesn't add any kind of viewer, colors, or collapsing. If you want this to work as expected, disable devtools.jsonview.enabled in about:config.
Расширение, позволяющее значительно ускорить сбор фраз с помощью сервиса подбора слов Яндекс (wordstat)
Parses the WSDL files and generates SOAP messages for you.
Toggle between direct connection and a single proxy server via a toolbar icon.
Productivity tools for Salesforce.com administrators and developers to inspect data and metadata.
Live Reload feature for Dynamic content (PHP, Node.js, ASPNET - Whatever, it doesn't matter). This extension is for Live Server - VSCode Extension (required v3.0.0+).