You convert the books in calibre in advance, or when saving to device. Or sending to disk.
I typically convert anything, except PDFs, to ePub. But keep the original format.
I wouldn't even try to convert from PDF to anything else. It requires far too much work and the end result is most likely still not very good. Learn to avoid PDFs, if you can...
Everyone likes PDFs, except those who have tried to convert PDFs to something else. They hate PDFs. With a passion!
My ereader app (Mantano) handles both ePubs and PDFs, so I don't have to convert PDFs to anything else. That is one major reason for why I chose that ereader app. 8)
Last edited by Adoby; 01-29-2013 at 08:02 PM.