With adaptive image we were able to decrease amount of transferred data to 14% from desktop view. So mobile browsers even with low speed are able to have good browsing experience. Size of all images without adaptivity in desktop view is 1,2MBytes. [caption id="attachment_1341" align="alignnone" width="300"] images without adaptivity[/caption] Size of images with adaptivity in mobile view is 0,17MBytes. [caption id="attachment_1342" align="alignnone" width="300"] images with adaptivity[/caption] So if you are making really visual (lots of images) website with responsive design you should really consider adaptive images. There's no use of responsive design and mobile view if loading a mobile page takes forever. This article was based on lemminkainen.fi site's frontpage.