fsc-convert.py is a command line converter, written in Python3.
It converts film_script markdown to Fountain markdown format, and more.
more info (here): about film_script_format | the_film_script_formatting_rules
plus: https://artreboot.eu/film_script
There is a working version, in a day or two I'm going to upload it. as of 27/Apr/2026/09:23