EPUB actually is an open format. I believe it can be locked down, but EPUBs are available in an unencrypted non-DRM fashion.
Not sure if you can extract them from an Amazon device. It may be possible.
If your ethical guidelines would allow it, you could also see if this library has an EPUB copy of the book you already own.
It’s not there
Pretty sure Amazon kindle doesn't use epub. Many years ago there was software that could convert their format to epub but would be very unsurprised if that is no longer possible.
Calibre
Amazon uses a couple that are easily convertible any which way with Calibre
Right. So still works then? That's cool.
Absolutely works brilliant
I also Calibre-web docker for accessing books when kindle not in hand.
What’s calibre?
If you’re in to reading ebooks this is important to have
