Kindle supports – Word, MOBI, HTML, RTF, ePub, Adobe PDF, TXT, and Kindle Package Format. So, as a device owner and eBook reader, you got to pick what best suits your device specifications. An iPhone and an Android device might not support the same format, while Kindle might have a completely different file format for supported eBooks. It is important to know the supported file types by your device. Preparations to get free ebooks from eBook torrenting sites Learn about the ebook format supported by your device