EPUB File (What It Is and How to Open One) - Lifewire
https://www.lifewire.com/what-is-an-epub-file-2621084
WEBJun 9, 2023 · What to Know. An EPUB file is an eBook file format. Open one with Calibre, Sumatra PDF, or Apple Books. Convert EPUB to PDF, MOBI, etc., with Zamzar so it's suitable for your …
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