Convert E-Books to PDF

ePub and Mobi (the Kindle format) are solid file formats for electronic books. But they are harder to handle than, e.g., PDF or plain text as they are designed for reading on an ebook reader. They are not really suited for using them inside other applications or for long-term archiving.

One option is to convert your ebooks to PDF using Calibre. Daniel Wessel writes about how to do it on his blog*.