Responsive images: Using extended srcset and the picture element

Free tools for cross-browser testing

No PC? No problem. Our tools and virtual machines are free and cross-platform, so you can test your site today on your favorite device—even a Mac.

Microsoft Edge shown on mobile and desktop devices

Track platform features in the Microsoft EdgeHTML rendering engine

Experiences powered by Microsoft Edge and the latest web standards

asm.js Chess Battle

This demo pits identical chess engines against each other, one turbo charged for asm.js and one normal JavaScript to demonstrate the benefits of optimization.

Utilization of responsive images - srcset, sizes and picture

Show how to enhance your example with responsive images

Web Note Coloring Book

Web Note is a new feature of Microsoft Edge that helps you write, draw, make notes and share web pages.

SimpleWebRTC with ORTC

Use Microsoft Edge's ORTC API and the WebRTC APIs in Chrome and Firefox to make cross-browser conference calls.