Don Marti from CafeMedia brought to our attention that individuals relying on legacy web servers, shared hosting, or a variety of other hosting plans who want to add their proposed First-Party Set to the Github repository at github.com/GoogleChrome/first-party-sets may have difficulty serving an extensionless JSON file such as the currently required .well-known/first-party-set.

Currently, adding a .json extension to the name of the file would cause their First-Party Set to fail the checks on the repository, putting these individuals at a disadvantage. The requirements should be modified so that FPS submitters must have their sites' JSON files served at .well-known/first-party-set.json so that all submitters can more easily pass the checks.