It's great that browser makers have been focused on improving JavaScript, but if we really want to speed up the web it's time to tackle images as well. Skip to main content Open Navigation Menu ...

Simulating mobile environments in a web browser. Responsive web design starts in the application design and implementation phase, when we use tools to simulate different platforms and screen sizes.

To show off what EdgeHTML can do, Microsoft has built a browser using predominantly JavaScript, HTML, and CSS. Next, the company released the app on the Windows Store and the sample code on GitHub .