I'm trying to generate an AZK file from the command line.

I need an AZK file because I need to test my Kindle books on iOS devices. These books are in Japanese, which currently is not supported for Enhanced Typesetting, so I need to sideload an AZK file. It's a pain to generate this in Kindle Previewer each time, so I want to automate the process.

The source file is an epub.

I convert the epub with Kindle Previewer 3 via the command line:

kindlepreviewer myfile.epub -convert -showpreview

This will create a mobi from the epub and then launch Kindle Previewer. From Kindle Previewer, I can then go to File->Export and output an AZK-- this is the part I want to automate.

It seems there was a tool called Gozak for doing this but it's not available anymore.

I tried running azkcreator via the path in MacOS but it just segfaults:

➜  ~ /Applications/Kindle\ Previewer\ 3.app/Contents/MacOS/lib/azkcreator
[1]    18208 segmentation fault  /Applications/Kindle\ Previewer\ 3.app/Contents/MacOS/lib/azkcreator

So, my guess is that there is no way to create an AZK file from the command line at the moment-- but I hope someone can prove me wrong!


3 Answers 3


AFAIK, you can't directly convert from the command line using Kindle Previewer. You also can't convert multiple files.

But there is a plugin for Calibre that would allow you to do it. Now you use Calibre to convert from the command line using the Calibre executable ebook-convert:

ebook-convert myfile.input_format myfile.output_format -h

I’m not sure you can generate an AZK from the command line. From https://wiki.mobileread.com/wiki/KindleGen

Note that Kindle Previewer is currently the only way to generate AZK files for iOS use.

Not the answer you seek, but an answer.


You can generate via caliber..

  • Welcome to the site Anthony! If you could link to some documentation and put a summary of the steps in your answer (in case the link ever changes) that would be very helpful, thanks!
    – Jason Down
    Commented Nov 26, 2020 at 15:28
  • While this link may answer the question, it is better to include the essential parts of the answer here and provide the link for reference. Link-only answers can become invalid if the linked page changes. - From Review
    – mmmmmm
    Commented Dec 17, 2020 at 12:28

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