Epub is a decent format. Nostr client could convert it to markdown notes to read per chapter. I like the UI that thenetworkstate.com has
Yeah, my gripe is specificially with pdfs. Epub can stay 😊
My point is that we don't need to convert to ePub to have e-Reader documents. We just need to carefully craft a client.
Publishers have epubs. They don't have raw html or markdown. I have 50 epubs at bitcoinbook.shop that I could upload. Let the nostr client parse those imo. Indesign books export reflowable epubs too. That's the standard. Work with that
Pandoc can already convert from epub to markdown and we have a markdown to 30040/30041 converter/uploader that we're already using to publish books. You can already convert all the books. Would be nice to have a pretty online website for doing it, I agree, but that's not really what we're discussing. We're discussing a nostr-Native e-reading app that imports and exports ePubs (or any other format, pandoc does all of the major ones), but uses notes stored on relays internally.
You can try out Pandoc here: https://pandoc.org/demos.html
Epub is rubbish for math though
Nostr is the more powerful protocol and can create more complex, interactive documents because of the json structure. Also, Nostr is the uncensorable protocol. As soon as it's notes, you can store it in relays, and then generate ePub (or markdown, HTML, LaTeX, etc.) on the fly, as needed. Nostr means you could replicate a banned book or article to X number of countries and hundreds or thousands of relays, within a few seconds.