UTILITY
Dither image
Simulate extra tonal steps with an ordered 4×4 dither pattern.
Tool
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INSTRUCTIONS
How to use it
- 1
Choose the source image from your device.
- 2
Adjust the amount or color controls, and inspect the updated image preview.
- 3
Download the processed PNG; your original file remains unchanged.
DETAILS
About this tool
A Bayer 4×4 threshold pattern distributes brightness into a restricted number of gray levels. The level slider selects the grayscale palette size.
This is ordered grayscale dithering, not error diffusion or color-palette quantization.
Practical questions
What does this tool change or return?
A Bayer 4×4 threshold pattern distributes brightness into a restricted number of gray levels. The level slider selects the grayscale palette size.
What are its limitations?
This is ordered grayscale dithering, not error diffusion or color-palette quantization.