Responsive images based on the 'srcset' attribute proposal. See http://dev.w3.org/html5/srcset/. Lightweight, no nonsense, all browser supporting, fast polyfill for img srcset.

• Browser support: Tested in IE 6-9, Chrome, Firefox, Opera, Safari
• Size: 1.21KB minified (700 bytes gzipped)

Simple high density screen ('retina') query

<img srcset="image.jpg 1x, [email protected] 2x" alt="image" />

Viewport width and pixel density query

<img srcset="low.jpg 400w 1x, medium.jpg 750w 1x, high.jpg 1000w 1x" alt="image" />

###Dependencies None, simple javascript for fast execution. Version 1 relied on media-match.