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Dithering Tool — Free Online Tool | Pixlane

Dither any image with Floyd-Steinberg, Atkinson, Bayer 4×4/8×8, Sierra, or Jarvis-Judice-Ninke error diffusion. Pair with retro palettes — GameBoy, NES, CGA, Pico-8, ZX Spectrum, Apple II — for pixel-perfect retro output.

All processing runs locally in your browser. Your files never leave your device — no upload, no server, no signup required.

Frequently Asked Questions

What is dithering?

Dithering simulates additional colors on a limited palette by scattering colored pixels in patterns the eye blends. Used heavily in early games, e-paper, and newsprint.

Which algorithm is the default?

Floyd-Steinberg is the default because it produces balanced, natural-looking results with good edge preservation and is the most widely recognized.

What are the retro palettes?

Built-in palettes reproduce the exact colors available on the Nintendo Game Boy (4 greens), NES (54 colors), IBM CGA (4 colors), Pico-8 (16 fantasy-console colors), ZX Spectrum, and Apple II.

Why pixel scale?

Pixel scale upsamples the input first so each output pixel corresponds to an NxN block — perfect for chunky pixel art output.

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