<picture>
<source media="(max-width: 1024px)" srcset="http://qnimate.com/wp-content/uploads/2014/06/1024.jpg">
<source media="(max-width: 512px)" srcset="http://qnimate.com/wp-content/uploads/2014/06/512.jpg">
<img src="http://qnimate.com/wp-content/uploads/2014/06/backup.jpg">
</picture>