amiga games icon

[SeiyaBe]

i'd like to transform a JPEG, PNG or other format in Amiga icon that must visible from kickstart 1.3 or 3.0/3.1 with their default colors.
I can do it with Amiga or PC software that i can easily do?

i found some games incon on aminet, but these ones are Tools icons. I need to transform in Project. So i presume i should work with 3.9 and RAWinfo

i'd like to make easily from windows, but maybe there isn't a good software for that..

[SeiyaBe]

i find this software, but how to use?
https://github.com/steffest/Amiga-Icon-converter

the result should incredible. Create icon for any AmigaOS from 1.3 and more modern

now i will try what you suggest