Currently the media, imagesrcset, and imagesizes are ignored for early hints. This means that an early hint to preload a mobile-only image would still preload it on desktop.

I'm suggesting, instead, that those attributes are respected, but that for a start those links become un-early (they're treated as regular link headers, processed upon document initialization).

This would make the link header spec a bit more aligned, and perhaps fitting better with developer intent.

@yoavweiss @bashi @nhiroki please CC whoever else :)