azw3
What is a .azw3 file?
application/x-mobi8-ebook
AZW3 (.azw3, Kindle Format 8) is Amazon's e-book format based on EPUB-like HTML/CSS wrapped in a Mobipocket/PDB container, supporting richer layout than the older MOBI. It is used by Kindle devices and apps.
How to use a .azw3 file
Use an example .azw3 file to test Kindle-format parsers, Calibre conversion, and AZW3-to-EPUB tooling.