It is possible to use Fontself Maker to open a font that was created with it. If I want to sell one of my fonts, I do not want it to be opened with Fontself. For black fonts, I can change the font to .ttf (and back again), then you cannot open it.
But how can I do that with a color font? Is there another file format to transform back and forth or another trick to protect a font from opening?
Thanks for reading and stay healthy