It's possible to download a marked-up PDF as a PDF from a Remarkable -- I can't speak for the others.
That's a decent enough solution if they let you automate somehow (e.g. sync to PC once a week without me thinking about it). I could then build further automations to parse those PDFs.
That's a decent enough solution if they let you automate somehow (e.g. sync to PC once a week without me thinking about it). I could then build further automations to parse those PDFs.