Quote:
Originally Posted by DiapDealer
Probably need to pop it open and look at the OPF file. There'll be a version attribute in the package tag. calibre's editor would let you see it pretty easily, if you use calibre. You could also use the online IDPF epub validator (validator.idpf.org). It will detect the version.
Or if you mean looking at Kobo's catalog ... if the download options don't specifically say EPUB2, it's probably EPUB3.
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Thank you kindly. I was looking for a way to check any epub bought anywhere.
I'm too stupid to figure out Calibre editor so I went the IDPF route. Indeed, the little self-pubbed book I bought (and was refunded) at Kobo was epub3. Evidently, Smashwords allows authors to upload epub3s. I repurchased it at B&N and also received an epub3 and sideloaded it onto my Sony 650. It seems to work ok other than the cover missing.