The Key Difference Is Whether Text Reflows
EPUB and MOBI automatically adjust font size and line breaks to fit the screen, while PDF keeps the original layout exactly as-is. EPUB tends to suit text-heavy books like novels better, while PDF often suits books with lots of tables or images.
Curious About Other File Formats Too?
If image or video file formats interest you, it's worth also checking out a guide to image file formats.
Frequently Asked Questions
Can't Kindle read EPUB files?
Kindle didn't support EPUB in the past, but more recently, Amazon has added ways to convert EPUB files through your Amazon account so they can be read on Kindle as well.
Can ebook formats be converted between each other?
Yes β free software like Calibre makes it easy to convert most ebook formats into other formats.