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dithering with css

handy if you're running a site with pictures but you want everything to maintain a consistent aesthetic and colour scheme. might be better to just process the images and save them already dithered, but this way can be customized.

Noise dithering

image
noise 0.90 1 2
mix (feComposite arithmetic) 0.00 0.75 0.35 -0.05
two-tone