Universal Images Community Group
The goal of this approach is to embed the details on what crop/size of the image should be shown for a particular viewport into the image itself as Metadata. This approach would allow the artists, or image creators, the chance to specify just how their work should be showcased.
These are images which contain metadata that lets them adjust to different sizes, depending of the format of the output device or the layout of the website it is used in. These images can be used to have a web-server automatically create the alternative versions needed for a responsive website.
An excerpt from Universal Images Community Group
