Quantize Colors in Images Online

Reduce the number of colors in your images for posterize effects, color reduction, and artistic looks. Control color count, dithering method, and tree depth.

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Number of Colors 16

Maximum number of colors in the output

Dither Method

Method used to simulate missing colors

Tree Depth

Color tree depth (0 for auto)

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What is color quantization?

Color quantization reduces the number of distinct colors in an image. This creates a posterize-like effect where smooth gradients become flat color areas.
It's useful for creating artistic effects, reducing file sizes, or preparing images for limited-color displays.

What is dithering?

Dithering simulates missing colors by mixing nearby colors in patterns. Floyd-Steinberg is the most common and produces smooth results.
Riemersma dithering uses a different algorithm that can work better for some images. No dithering gives sharp color boundaries.

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