Splits heat 1 from the feature race to make it easy to upload multi-heat races to simracerhub as individual races
You can find executables for windows, linux, and mac on the releases page for the repo:
https://github.com/Bjorn248/simracerhub_heat_splitter/releases
Replace the example executable below with the appropriate binary for your OS
./simracerhub_heat_splitter -file <input_html_file>