It could be handled on the web (or implemented on any web browser), if QOI format has MIME type.
Can we use "image/x-qoi" as a proprietary media type of QOI?

The "regular" media types of iana.org is listed here.
https://www.iana.org/assignments/media-types/media-types.xhtml