The fabric used for #crossstitch (if you want a neat grid) is called 'AIDA' I thought there would be a service that would print pattern (*.json or *.oxs files? there seem to be many formats)
This isn't really a thing. Oh yes, they will do it for *photos* but, I think precision printing that lines up with the grid is a challenge.
(Also most pattern designers are more experienced than I am. They seem to just count it out... or they use iron-on patterns which sounds hard.)
I will try counting.