Yeah, I found the online generator already actually. Problem is that it doesn't actually work -- it lets the circles overlap, and the controls for changing the "brush" size don't actually do that. At least in any browser I've got. They stay on random mode, which creates circle way too big ...

Hi everyone. Long time user; first-time questioneer. I was wondering if anyone knew of a way to create "Ishihara" style images -- essentially, filling a region with lots of small, non-overlapping objects. The canonical example is the Ishihara color-blindness test, which I assume most every...