Quote:
Originally Posted by speakingtohe
Not as smooth an shiny as some. But being able to view most file formats in one viewer makes up for this for me.
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I'm pretty sure calibre's built-in viewer is very specifically an EPUB viewer. It just gets the benefit of calibre's format conversion functionality. So if you want to view a mobi or lit or fb2 or whatever format, it does a temporary conversion to epub before displaying.