Re: [w3ctag/design-reviews] Priority Hints API (Issue #704)

Thanks. The sites can control the priority of the initial ad logic/script which should mitigate the bulk of the issue. An ad may be able to boost the priority of downstream script fetches or any iframe documents that it adds to the page but at that point it is after the initial ad script has already loaded and run, reducing any likely risks. It may actually be beneficial even within an ad context to prioritize images and scripts relative to each other.

I'll bring it up with the working group to discuss if it might make sense to look into possible CSP rules preventing the API from being available in 3rd-party script contexts which would give a site explicit control over what would be able to apply hints but that might be overkill.

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