Contact emails

yo...@yoav.ws / yoav....@akamai.com

Spec

https://tools.ietf.org/html/rfc5988

No TAG review for the feature, as it's a small extension of already shipped Link header support for other rel values.

Summary

The proposed change will add support for the "prefetch" rel value in Link headers, enabling easy addition of such resource hints and therefore easier hinting of resources needed for next navigation.

Is this feature supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

Yes.

Debuggability

Resources prefetched by Link headers would be visible from the network panel in DevTools. I'm not sure if further debuggability support is required.

Interoperability and Compatibility Risk

Interoperability risk is low. Firefox supports the feature.

I haven't heard specific public signals from other vendors regarding "prefetch" Link header support, but I haven't heard objections from them when discussing Link header support in general (e.g. for "preload").

Compatibility risk is low, as the feature is already support in Firefox, and non-supporting browsers would simply not prefetch hinted resources, resulting in lack of optimization, but no breakage.

OWP launch tracking bug

Add crbug.com/658274

Entry on the feature dashboard

https://www.chromestatus.com/feature/5383221353119744