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Originally Posted by geek1011
Hmm? There is a windows 64bit version. Just click the other platforms link on the kepubify webpage. I have 32bit as the default for compatibility. It actually does not make any noticeable difference in performance.
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Normally it doesn't indeed, but there are some huge books in circulation, notably many Delphi Classics, that need more than 2GB of RAM to convert. On 32-bit Windows, 2GB is the limit for memory usage by a single process. At least with Calibre, some EPUBs cannot be converted to a different format if you're using the 32-bit version. The convert worker will crash when exceeding 2GB (at least, at the time when I last used the 32-bit version). I do not know if Kepubify manages memory differently and can convert any EPUB book no matter the size without using more than 2GB.