Nice project. First stargazer! If you add the GitHub topic `openapi3` it will get picked up and indexed by https://apis.guru/awesome-openapi3/

> Support JSON (only YAML for the moment)

JSON is a subset of YAML, so this should "just work" with no changes... Oh, I see, it autoconverts JSON to YAML at the moment so needs a JSON mode.

Does it not support the OPTIONS and TRACE methods?

Typo: "Deuplicate" for "Duplicate"