[webkit-dev] The SrcN responsive images proposal

Yoav Weiss yoav at yoav.ws
Sat Oct 19 14:39:40 PDT 2013

Hello WebKiteers,

I'd like to get the project's opinion on a recent responsive image proposal
by Tab Atkins dubbed srcN:

This proposal covers all the major responsive images use-cases: DPR based
resource selection, viewport dimensions based resource selection and
It does so while avoiding previous implementor concerns regarding the
<picture> element and its complexity, and while providing better authoring
tools for viewport based resource selection than previous proposals.

The srcN proposal does come to replace the srcset DPR switching syntax
which recently landed in WebKit (an effort I was a part of). OTOH, srcN's
x-based URL syntax replicates srcset's DPR syntax, so I believe large parts
of that code can be reused in srcN's implementation.

Will the project welcome patches implementing the srcN proposal? (Possibly
behind a flag)

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