ePUBs and Readium

Last week I posted about formatting an ebook using Calibre and Sigil, and said I would post an update if I figured out why my ebook didn’t work in Readium. Well, here’s that post. Readium only supports ePUB 3. Calibre and Sigil generate and edit ePUB 2. From what I’ve researched, all ePUB compatible eReaders…

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