> Hmm. That's probably because I turned of H1 since there's already a title at the top. Should the title be separate?

For note taking app allowing only single title makes a lot of sense.

The note title came from the file name, and my H1 got demoted to Paragraph with larger text. Since md can have any number of H1's, it doesn't seem possible to convert it without loss of information. One option would be to detect if there is only one H1 and use that instead of file name for note title. If there is more than one, then convert all H1 -> H2, all H2 -> H3 and so on.