Re: [w3ctag/design-reviews] Design Review: Speculation Rules (Prefetch) (Issue #721)

> We're now looking to expand this to cover cross-origin same-site prerendering, i.e. cases like `https://a.example.com/` prerendering `https://b.example.com/`. This _will_ include credentials/storage access, since those are site keyed, but it will also require an opt-in from the target site via a new HTTP response header, `Supports-Loading-Mode: credentialed-prerender`, to protect the origin security boundary.

We're exploring different use cases for prerendering in Google Workspace apps that would require cross-origin same-site support.  This is generally needed for cross-app user journeys, a good example of which is prerendering of Google Docs documents (docs.google.com) that users are likely to navigate to from e.g. Drive (drive.google.com) or Gmail.

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Received on Wednesday, 2 November 2022 05:09:19 UTC