Color Blindness Simulator

Compare an image with four color vision simulations.

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Approximate simulations using Machado's full severity matrices in linear RGB. Individual vision varies.

Compare an image with four color vision simulations.

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Compare the original with protanopia, deuteranopia, tritanopia, and achromatopsia previews.
Save any simulation as a PNG. These are approximate models, not individual vision measurements.

Browser-readable images, scaled to at most 1600 pixels on the longest side. Simulation PNG uses the input name with a simulation suffix.

Processing stays in this tab. Input and generated content are not uploaded or stored.

All processing runs locally in your browser. This tool is provided as-is without warranty. Keep backups of your original files before processing.

By uploading media, you confirm you own the content or have permission to modify it. Please read the Terms and Conditions.