fenced-frame
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WICG
Proposal for a strong boundary between a page and its embedded content
Currently iframes are able to observe changes in their intersection with an ancestor element or with a top-level document's viewport via the [IntersectionObserver API](https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API). Fenced frames cannot observe the IO...
As in this [proposal](https://github.com/Tanych/accept-language), the browser should only send the user's most preferred language in the `Accept-Language` header instead of sending all languages. For cross-origin `iframe` subresource requests, it will...
It's good to clarify how the service worker works in fenced frames. - Which pages are controlled by the service worker in FF - What happen if the service worker...
Powerful APIs are restricted in fenced frames by some security mechanism like [permission policies](https://github.com/WICG/fenced-frame/blob/master/explainer/permission_document_policies.md) or [sandbox](https://docs.google.com/document/d/1RO4NkQk_XaEE7vuysM9LJilZYsoOhydfh93sOvrPQxU/edit). However, some other APIs that can be communication channels between the embedder and the...
The network partitioning key will be updated to include a nonce for the FF tree in the fetch spec. Similar changes will be required for the storage partitioning key.
The `iframe` element supports `loading=lazy`. It seems to me like it would be useful for `fencedframe` also. Possibly the same could be said for some of the other attributes of...
Fenced frames only allow potentially trustworthy urls and don't support upgrading insecure requests. The behavior should be documented in the explainer/spec.
Currently the HTML Standard mentions that UAs _should_ prompt users to confirm POST resubmissions [here](https://html.spec.whatwg.org/#dom-location-reload) but we want a carve-out for fenced frames. We should also check if there are...
The rationale for this discussed in https://bugs.chromium.org/p/chromium/issues/detail?id=1271408#c22