This is a script that I am using for this project Pixelart for games by parabud | Snap! Build Your Own Blocks and it does not work.
I’m not sure what this is supposed to do; could you be more specific about “does not work”? What’s it supposed to do, and what does it do?
I do notice that you use fractional pen sizes. A pen size of 1 means just one screen pixel wide; you can’t get narrower than that. (If you’re using a 4K or better monitor, a pen size of 1 means two pixels wide, so you can sensibly set the pen size to 0.5.)
It is supposed to redraw the art.

