
NOTE: Using ADE will work with transferring both Adobe DRM content and DRM-free content. From there, you’ll be able to transfer supported eBook files to your NOOK Library. Calibre-web only supports in-browser reading of epub files, not kepub files (I believe a feature request is open in the Github project for this), there's no way to sync the official Kobo reading app with Calibre-web, and I'm not aware of any third-party apps that support kepub files and syncs with Calibre-web (if anyone knows of an iOS app that does this, please let me know!) If Calibre-web's "Read in Browser" feature could support kepub files, I'd be a very happy camper.To transfer eBooks with Adobe DRM (and other eBooks in EPUB or PDF format) to your NOOK, you’ll need to download and install Adobe Digital Editions (“ADE”) on your computer. Syncing Between Kobo and Non-Kobo Devices This seems to be the uncracked nut. Reading progress sync with epub files is a hot mess. The good news is that I don't need to manually sync after reading. The one small caveat is that I need to go back to the main book menu in the first device to kick off the location sync with the Calibre-web server.

Reading progress with kepub files syncs really well - I'm currently testing on two Kobo devices (a Sage and a Libra 2), and if I read on one device, and I open the book on the other device, it'll ask me if I want to sync to the last page read. Reading Progress Sync This gets a little more nuanced. Library sync w/ the Kobo works very well.

Library Sync Since I'm still in testing mode, I'm working with a small library of just a handful of books. I'm in the same boat as you (exploring a switch from Kindle to Kobo), and am actually in the middle of testing Calibre-web sync with Kobo.
