: 1bit MacPaint style Dithering I am looking for a way to achieve a MacPaint style effect from a full color RGB piece. See below for an examples of the style. Basically what I need is a

@Angie364

There's also a wonderful site that does this for you using HyperDither's algorithm.
gazs.github.io/canvas-atkinson-dither/#

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@Berryessa866

If you want control over the actual patterns used you could define actual patterns in Photoshop and use them as pattern fills. There're a number of ways you could apply the pattern fills... one idea which may or may not work for you is to use actual fill layers with blending options...

Take this for example:



Convert the image to grayscale and posterize it (with as many levels as you want patterns):



Create a pattern fill layer (for this example I literally copied the MacPaint pattern swatches and turned them in to patterns). From the pattern fill's layer style dialog, drag both the "Underlying Layer" sliders under the "Blend if" so that the pattern is only visible if it is over a certain range of gray:



Repeat with more pattern layers:





The "Blend if" method gets a bit tricky with more than a few layers since you end up with the patterns blending with each other so that may not work for you.

Another option is to create a bunch of 1 bit masks to apply to each pattern fill layer (you could do this by running a threshold on your image at different levels). Something like this...

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@Moriarity648

This might work for you in Photoshop.


click Image > Mode > Greyscale, then Flatten and Discard.
click Image > Mode > Bitmap, method: "diffusion dither", or
"halftone screen".


Here are examples showing before and after.



Another possibility is the following


click Image > Adjustments > Desaturate
click Image > Mode > Indexed Colour. When the dialog pops up choose Colours: 13, Forced: None, Dither: Pattern.
click Image > Mode > RGB
Add a Brightness and contrast layer adjustment, and mess with the sliders to make it a bit brighter, with solid blacks


Here's the result of that.

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