Re: [resource-hints] Resource de-prioritization?

>
> As far as images go, we could also say that the only reason we need hints
> to lazyload images is the fact that Web compat requires image download
> before onload. Authors could also provide a page-wide hint to say "I don't
> care about images in my onload. You, the browser, can lazyload everything,
> if you find it helpful".
> That would complicate life for the preloader (no notion of viewport there,
> so no idea which images are visible), but the download queue could then use
> heuristics to download only the first X images, and wait for layout for the
> rest, etc, etc. The browser is in a better position to do that.
>

I was wondering if we had optional elements, then lazyloading of images
would "just work": when an element is optional, its subtree is optional.
Then under that subtree, we change the semantics of onload.