Kindles used to only support limited file types, but as of 2022, they officially started supporting EPUB files. Now you can ...

Think you're stuck using only Amazon's Kindle format? Think again. Here's how to convert ebook formats, giving you more control over your digital library.

Locate the ePub title that you wish to send to your Kindle using the phone’s file manager application. Select the ePub title and press on the Share option.

The EPUB appears with a Proof label superimposed over its upper-right corner. Double-click it, and the proof opens, and a Devices button appears in the upper-right of the book file in garish purple.