FB2 converter to EPUB2/3, KEPUB, AZW8/KFX

A complete rewrite of fb2converter

• Produces EPUB2/3 and KEPUB files which pass latest epubcheck with no error/warnings
• Generates KFX/AZW8 files directly without any Amazon's software (much faster than using Kindle Previewer 3 with Calibre plugins)

Note: Direct KFX generation is a relatively new feature, so various hiccups may still occur. If you encounter any issues, please create an issue on GitHub for investigation. The generator aims to preserve maximum compatibility with Kindle Previewer 3 behavior, while also intentionally supporting capabilities that Amazon's processing pipeline does not expose. Examples include predictable handling of negative margins, richer drop-cap rendering, and condensed text controlled through html/body line-height processing. Good luck trying to produce something like this via "Send To Kindle".

Documentation

User guide

Russian discussion forum

Installation:

Download from the releases page and unpack it in a convenient location.