The web-features project is a catalog of the entire web platform, from the point of view of web developers. The project contains a list of (almost) all of the features of the platform, and provides (either directly or indirectly) links from this data to a bunch of other web platform-related data, such as compat, specs, documentation, surveys, vendor positions, etc.

Learn more about web-features.

I'd love for the interop focus areas to be linked to web-features IDs. The focus areas that got selected in interop-2025 are almost all covered by web-features already, here are a few:

backdrop-filter - backdrop-filter
Core Web Vitals - largest-contentful-paint, missing INP feature
CSS anchor positioning - anchor-positioning
<details> element - details
Layout - grid, subgrid, flexbox
Modules - json-modules
Navigation API - navigation
Pointer and Mouse events - pointer-events-api
Remove mutation events - mutation-events
@scope - scope
scrollend event - scrollend
Storage Access API - storage-access
text-decoration - text-decoration
URLPattern - urlpattern
View Transitions - view-transitions, view-transition-class

Creating a mapping between the two projects would be beneficial:

• This could allow linking from Interop dashboard to MDN directly.
• This could help raise awareness about Interop and the current focus areas via the multiple places which display web-features data already.

I don't think this has to be very fancy. A json file inside the 2025 folder could work, and I'm willing to contribute it via a PR if people agree.

Note that there's also a way to link WPT tests to web-features already. For example, the feature:grid filter returns all of the tests that relate to the grid web-features entry. But this is slightly different than this. This mapping is for focus areas, not tests, and aims to bring visibility to Interop, not only WPT.