sonarwhal website on a laptop

Scan your website with sonar, the linting tool for the web

We've completely revamped our scanning tool to bring you sonarwhal, a configurable linting tool for developers of any skill level that you can add to your workflow to help you build better websites

Free tools for cross-browser testing

Our tools and virtual machines are free and cross-platform, so you can test your site today on your favorite device.

  • Instant Testing

    Powered by BrowserStack

    Free live and automated testing is now available through BrowserStack. Sign up here

  • Virtual Machines

    Test Microsoft Edge and also IE8 up to IE11 using virtual machines that you download and manage locally for free.

  • Generate Screenshots

    Visualise how your site renders across 9 common browsers and devices.

  • Site Scan With sonarwhal

    We've completely revamped our site scanning tool to bring you sonarwhal, a configurable linting tool for the web.

Microsoft Edge shown on mobile and desktop devices

Track platform features in the Microsoft EdgeHTML rendering engine

  • Platform status
  • Changelog
  • FAQ

Experiences powered by Microsoft Edge and the latest web standards

Web Push Notifications

Push notifications can help you achieve what apps have long been able to do. Join us as we explore how to build the front-end and back-end of a push notification.

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Variable Fonts Demo | Microsoft Edge Demos

OpenType Font Variations make it possible to access multiple typefaces within a family from a single resource. Take an expedition into the typographical variety available via variable fonts

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CSS Grid Paradise Puzzle

CSS Grid unlocks so many capabilities for great two dimensional layout on the web. As such, we utilized grid to create a puzzle game, how fast can you complete it?

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Web Authentication

This demo showcases how you can log in to a site via Windows Hello. Once you are logged in, you get to see videos of puppies!

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