Heya, so sorry for being late on a reply, had too much going on in my life.
Image support is currently broken, it *might* work on the linux version because that one was always one step ahead. So this isnt an issue on your end!
At the core I wanted notenode to be intuitive so that users would not have to convert anything etc. and I do have notenode2:alpha in the works which is a full rewrite that is closer to the obsidian ecosystem. However it is currently in the backlog... with a release tbd. If you want a link to the alpha prototype send me a dm!
Thank you for the feedback :3