didder

Didder[0] is a good tool for dithering. I use it to pre-process images for the 6-color e-ink displays. You can go down a rabbit hole of dithering algorithms too, like Floyd Steinberg[1] [0] https://github.com/makew0rld/didder [1] https://en.wikipedia.org/wiki/Floyd%E2%80%93Steinberg_dither...

I left a comment [0] on the other thread, and this is irrelevant if you aren't using Photoshop, but there's a plugin called DITHERTONE Pro that gives you a lot of control over the dither algorithm used + color grade. For actual design, I tend to use this since I'm already in PS cobbling together an image, and you can tweak the results in realtime to dial it in how you want. I also have used didder [1] a couple times for dithering via CLI / script. Its results can be pretty good too, just more for repeatable batch operations and you need to make sure your palettes and chosen algorithms will produce what you're actually looking for. [0] https://news.ycombinator.com/item?id=45726845 [1] https://github.com/makew0rld/didder

Love these! Also check out Didder https://github.com/makeworld-the-better-one/didder https://vladh.net/dithering

I created dither, a library for image dithering in Go. And then I created didder, a CLI tool for the library. I had become interested in the aesthetic effect of dithering, but realized that there aren't many tools that do the math correctly, and also provide many different algorithms to explore. https://github.com/makeworld-the-better-one/dither https://github.com/makeworld-the-better-one/didder