The Top 3 File Formats Used With eBooks


With all the eBook devices and formats emerging, it can be somewhat confusing when preparing your book for eBook distribution.  There are three main file types currently associated with eBooks:

EPUB (.epub) – Short for “electronic publication,” this is the most popular open standard format for eBooks that allows DRM (digital rights management). It is also the format used with all the major retailers EXCEPT Amazon/Kindle. With EPUB, reflowable content ensures that text is displayed in the optimal manner for each eReader or smartphone device.

• Mobipocket (.mobi) – An eBook format that allows users to add a blank page at any point in the text for notes, bookmarks, corrections, and drawings.

• Kindle (.azw) – Amazon’s proprietary format is based on mobipocket, but it comes with its own DRM protections.

If you’re using BookBaby for distribution, you won’t need to worry quite as much about file formats since we’ll handle your eBook conversion for free!

-Chris R. at BookBaby

BookBaby makes self-publishing easy: From book printing, eBooks, distribution, cover design, and now editing. Since 2011, we’ve helped thousands realize their publishing goals, backed by a 100% satisfaction guarantee. BookBaby creates and distributes your printed books and eBooks to the largest distribution network, including Amazon, iBooks, Barnes & Noble, and many other popular retailers worldwide.


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