That's a great idea! Is there a specific JSON format you'd need?
If you're trying to convert markdown documents into webpages, the most likely output format would surely be HTML, or perhaps something custom to the site like MediaWiki markup.
It's totally possible that a site would allow for new documents to be uploaded in a JSON format, but the format would have to be specified (e.g. which keys are used for the post body and subject) - so "whatever you deem best" is unlikely to work, it would need to be "whatever my webhost expects, which is documented -here-"
I'm happy to be wrong here, and zainhoda's markdown to JSONified HTML is interesting regardless - but I suspect you really wanted a markdown to HTML converter. ex: https://markdowntohtml.com/ or something more extreme like a static site generator: https://www.getzola.org/
I left the decision to him because why interfere with someone else who probably has a stronger handle on their own strengths. As for your webhost concern, I can always change webhosts.
Live App: https://markdown-to-json.pycob.app/
Source Code: https://github.com/pycob/prototypes/blob/main/markdown-to-js...