How to use z3kit Kindle Converter Leave a Comment / Articles, User-Guide / By z3kit z3kit Kindle Converter can help you easily remove drm from Amazon Kindle books. Convert them to epub, pdf, mobi, azw3. Best Practices (Updated at April 13, 2022) For MacOS users, make sure use Kindle version 1.31.0 or older version.For Windows users, please use Kindle version 1.34.0 or older version.Before you download the book, make sure z3kit kindle converter is open. Note: use coupon code to get 10% discount: SITE-10