I’m looking for a way to reduce the resolution of a layer in a way the “pixelize” filter e.g. in GIMP works. That means that I load an image and can artificially reduce the number of distinct pixels it has, to create a blocky effect.
I have tried isolating the area of the target pixels and blurring the pieces but the results are suboptimal: every “pixel” still contains a bunch of colors, and the larger the blur, the more grey the color gets.
Is there any combination of layers that will create what I’m after?