Dither

A method of simulating continuous tone with patterns of a smaller set of values, commonly black and white dots.

In the workflow

Why Dither matters

Local dot density creates the appearance of highlight, midtone, and shadow even though each output pixel is binary.

Practical check

How to evaluate it

Compare methods only after crop, tone, dimensions, and DPI are fixed. Changing several variables at once makes it impossible to know whether the dither improved the result.

Go deeper

Understand how one-bit dithering represents photo tones, how common algorithms differ, and how to choose without processing the image twice.

Read the complete guide

Prepare the pixels

Use the terminology in a real photo workflow.

Crop, tune, size, dither, and export a one-bit PNG on iPhone or iPad. Test the result on scrap with your machine and material guidance.

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