I had fond memories of Atkinson dithering from my time on early Macs as a child. That led me to create the ultimate 1-bit dithering Mac app (it even exports to

I had fond memories of Atkinson dithering from my time on early Macs as a child. That led me to create the ultimate 1-bit dithering Mac app (it even exports to MacPaint format so you can display photos from your modern Mac on your '80s B&W Mac). I wrote about the experience of implementing Atkinson dithering here: http://www.observationalhazard.com/2021/09/building-retro-dither-dithering.html http://www.observationalhazard.com/2021/09/building-retro-di... There's some stuff in there both about 1-bit dithering as well as about the MacPaint file format.