Viewing a PDF book on Iphone

Sometimes I feel that viewing a pdf file is too big for a IPhone, and difficult to view.

And I discover this posts

http://www.howtogeek.com/howto/19217/convert-a-pdf-ebook-to-epub-format/

, which could convert a pdf file to an ebook which can be view on IPhone,

Have tried it, this is indeed great. It converts the PDF books into epubs format.

Btw, I use to use the IBook device to store the pdf books that I phave.