This works nicely for background images. For <img src="..."/> tags, I use srcset, and then shiv browsers with javascript: https://github.com/jcampbell1/jquery

This works nicely for background images. For <img src="..."/> tags, I use srcset, and then shiv browsers with javascript: https://github.com/jcampbell1/jquery-srcset-retina-polyfill https://github.com/jcampbell1/jquery-srcset-retina-polyfill