Well, mimetypes are not decided on by the Nim core developers. Mimetypes are a iana standard. Here is the official list of standard mimetypes: [https://www.iana.org/assignments/media-types/media-types.xhtml](https://www.iana.org/assignments/media-types/media-types.xhtml)
Any unknown mimetypes should be designated as `application/octet-stream` so the browser knows to treat them with caution.
