Updates to modulepreload and preload to incorporate WHATWG changes for "style" and "json"

[KurtCattiSchmidt]

Description

Updates docs for preload and modulepreload per WHATWG changes in whatwg/html#11981

Motivation

This change aligns behavior with the current specs.

Additional details

Do not land until the WHATWG PR lands.

Related issues and pull requests

[github-actions]

Preview URLs (2 pages)

• /en-US/docs/Web/HTML/Reference/Attributes/rel/modulepreload
• /en-US/docs/Web/HTML/Reference/Elements/link

(comment last updated: 2026-03-04 08:27:33)

[chrisdavidmills]

@KurtCattiSchmidt Hi there, and thanks for the update. The changes seem reasonable as per the suggested spec change; I've given you a couple of minor suggestions to consider.

One thing though — it would make sense to hold off on this MDN change at least until the spec change is merged, so that MDN is consistent with the spec.

[mathewhodson]

Also as=style and as=json should be added to rel=modulepreload in https://github.com/mdn/browser-compat-data so they are shown in the compatibility table like they are in https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/rel/preload

[KurtCattiSchmidt]

Also as=style and as=json should be added to rel=modulepreload in https://github.com/mdn/browser-compat-data so they are shown in the compatibility table like they are in https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/rel/preload

Thanks for the heads-up @mathewhodson! I have a PR up for this: mdn/browser-compat-data#29048

Once that lands, I can add the support table to this PR.

[KurtCattiSchmidt]

@mathewhodson - compat changes landed, so this is already up-to-date! Thanks for the reminder there

@chrisdavidmills - the spec change landed in the HTML5 spec in January, so this is good to land (see whatwg/html#11981)

[chrisdavidmills]

Yup, all good to go. Thanks a lot for your work on this, @KurtCattiSchmidt!