Re: [css-images] Extending image-set() to be equal-power with current srcset/<picture>

On Tue, Nov 11, 2014 at 11:42 PM, Yoav Weiss <yoav@yoav.ws> wrote:

> On a separate thread [1], we were discussing adding opt-in preload hints
> to CSS. I also claim that it's fairly possible we don't need them to be
> opt-in [2].
> If we want such preloading to be applicable to CSS images (opt-in or
> otherwise), we would need "sizes" like functionality in CSS as well.
>

I do think we need an opt-in mechanism, and it should definitely apply to
all CSS initiated fetches:
http://lists.w3.org/Archives/Public/www-style/2014Nov/0216.html

ig