Once you have a web / javascript output, there are a bunch of possibilities: https://observablehq.com/search?query=stippling https://observablehq.com/search?qu

Once you have a web / javascript output, there are a bunch of possibilities: https://observablehq.com/search?query=stippling https://observablehq.com/search?query=stippling https://observablehq.com/search?query=dithering https://observablehq.com/search?query=dithering https://observablehq.com/search?query=halftone https://observablehq.com/search?query=halftone https://observablehq.com/search?query=crosshatch https://observablehq.com/search?query=crosshatch (Or go out and look around github or the broader web to find many more options.)