On Nov 12, 2013, at 4:11 PM, Adam Barth <[email protected]> wrote: > On Tue, Nov 12, 2013 at 12:08 AM, Jukka K. Korpela <[email protected]> wrote: >> 2013-11-12 9:58, Adam Barth wrote: >>> Unfortunately, we can't add new tags to head. If the parser sees a >>> tag it doesn't recognize in the head, it creates a fake body tag and >>> pushes the tag down into the body. >> >> But you could use <style type=text/foobar>...</style>, with a suitable value >> for foobar, like x-imgset. This could even be handled with a polyfill in old >> browsers (JavaScript code that reads such elements and interprets their >> content). > > Maybe there's a CSS solution to this problem? Do we just need to make > the preload scanner smarter about interpreting CSS?
In fact, I’d argue that CSS will be a better fit to address art direction use case since it’s purely presentational. We could define some ways to list set of images that could be replaced for a given img element in HTML and then let CSS pick which one to use for example. - R. Niwa
