Convert ebook From azw3 to fb2

AZW3 file is an eBook created in the Kindle Format 8 (KF8), Amazon's successor to the .AZW format. It supports newer features such as HTML5 and CSS3 support as well as many other formatting capabilities. AZW3 files often include DRM protection and are used as the download format for many Amazon eBooks. Information from <a href='https://fileinfo.com'>FileInfo - The File Extensions Database</a>.

FB2 file is a FictionBook 2.0 file saved in an eBook format developed in Russia. It contains XML that describes each element of the book and is designed primarily for fictional literature. FB2 files can be viewed by various eBook readers for Windows, macOS, and Linux. Information from <a href='https://fileinfo.com'>FileInfo - The File Extensions Database</a>.