Pretty awesome solution to this is the browser based page compilation for GWT: http://retina.teknonsys.com/ http://retina.teknonsys.com/ Works really well and

Pretty awesome solution to this is the browser based page compilation for GWT: http://retina.teknonsys.com/ http://retina.teknonsys.com/ Works really well and non-retina clients don't even have to load extra css or javascript for retina images, and retina clients don't have to load the small-version images. Fairly perfect solution... provided you use GWT, I guess, which is rare...