I just started a new topic on how to create SnapEDA footprints directly from my KiCad designs.
I use KiCad 5.99 Nightly. I realise that I need the new version 6 API if I need to create a tool to upload to SnapEDA (they require uploads Eagle LBR format, or you have to craete all the different versions for different EDA packages yourself) Export your own KiCad design as footprints to SnapEDA