I'm totally blind, so I use a screen reader. I find that a lot of extensions that use the browser view port just don't work for me. I don't have a directory set up yet. I do have this:
https://hopesnotes.net
I read documents in the outline format all the time. This is because I read legal documents, and those are in that format. I'll contact you with my email address.
Thank you. I'll be checking it out. Please feel free to ignore me (I am a stranger and a nobody, of course). If you don't mind me asking, what accessibility purposes are you concerned with? You got a place I can read about you, btw? You might call me a linkslut. I could imagine you might have strong opinions about bookmarks (I'd like to know them) and perhaps a library of them you might share.