PUBLIC MARKS with tags image & "responsive design"

With focal points (the small grey circles that appear over images you're editing), you can exert some control over the area of focus in your images.

Finally, true responsive images are becoming a reality on the web — in pure HTML, without convoluted hacks. The picture element and a couple of new attributes for the img element are behind a flag in Chromium 37 and shipping in Chromium 38 (so coming soon in Opera), in Firefox Nightly and are being implemented in WebKit (although it remains to be seen if Apple will ship it in the next version of Safari). The new picture element can be verbose and confusing, because it solves a range of use cases. To help you match your requirements to the responsive image syntax, we’ve prepared this article full of examples.

we’re a group of developers working towards a markup-based means of delivering alternate image sources based on device capabilities.