Every file format compatible with your Amazon Kindle

While you don't need to worry about file formats with Kindle books purchased from Amazon, you might have books from other ...
PC Magazine

Kindle e-book formats

Amazon's Kindle readers support a variety of e-book formats, including MOBI, AZW, KF8/AZW3 and PRC. MOBI came from Mobipocket, which Amazon acquired in 2005, and files may use the MOBI or PRC ...