If you're an avid e-book reader or someone who has an extensive library of Kindle content, now is the time to back up your ...

Kindle books are all in Amazon's proprietary e-book format of .AZW3 files. These files can only be read on Kindle devices, so if you want to read your e-books on another device — whether that be ...

Kindle e-readers use their own proprietary Amazon format to display e-books, AZW3, which keeps most users from loading up a bunch of copyright-free books in the most common ePub format.