This one works across nearly all platforms and is easy to manage and keep. One of the common formats you can consider is PDF ( EPUB vs. In these cases, you will need to convert your EPUB files to a more compatible format. While EPUB file works and opens on most devices out there, certain devices will not support this format. This is the file extension that is mostly used for eBooks. If you prefer reading books on your digital devices, you have likely come across EPUB files.
