>>16623>Who made .eupb
You mean epub ?
epub was developed by the International Digital Publishing Forum and is now maintained by W3>it has DRM
Yes it unfortunately epub files can be cursed with the Digital Restrictions Monster>so I assume it isn't open source
It's an open standard, it's not software so it doesn't have source-code
You are not forced to put restrictions on the EPUB files you are making, so it's still pretty good.
I don't know much about the technical side but if you were so unfortunate to have been defrauded into buying a digital book that was cursed, it's usually possible to strip off the curse so you can make the digital book your personal property, just like with any regular paper book. I hear that a software named Calibre can be augmented with plugins to uncurse your books
here is a guide to avoid the digital restrictions monster entirely:https://www.defectivebydesign.org/guide/ebooks