Ebooks are available in many different formats, including the widely supported ePub standard. You can read ePub ebooks on Apple iPad, Barnes & Noble Nook, Sony Reader, and Kobo eReader models; ...

We may receive a commission on purchases made from links. Some people prefer ebooks over physical copies for the ease of collecting and commuting with them. There are a bunch of different formats in ...

The Kindle Fire and second-generation Kindle Reader include native support for PDF files, but to view these files on a first-generation Kindle Reader, you must convert them to MOBI or AZW format.

The open-source EPUB e-book format is great for sharing books between different readers and making life easier on readers generally--but Amazon's Kindle, the big player, doesn't support it.