[whatwg] <imgset> responsive imgs proposition (Re: The src-N proposal)

Ryosuke Niwa rniwa at apple.com
Tue Nov 12 05:33:07 PST 2013

On Nov 12, 2013, at 4:11 PM, Adam Barth <w3c at adambarth.com> wrote:
> On Tue, Nov 12, 2013 at 12:08 AM, Jukka K. Korpela <jkorpela at cs.tut.fi> 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

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