Colour Blindness Simulator
Drag & drop images to simulate how different color vision deficiencies perceive your assets.
Frequently Asked Questions
Is this colour blindness simulator free to use?
Yes, it's completely free with no login or usage limits.
Are my uploaded images sent to a server?
No. Images are read locally via the browser's FileReader API and the simulation is applied using SVG color filters directly on the image — nothing is uploaded.
Which types of colour blindness can it simulate?
It simulates Protanopia (red-insensitive), Deuteranopia (green-insensitive), Tritanopia (blue-insensitive), and Achromatopsia (complete color blindness/monochromacy).
What image formats can I upload?
You can drag and drop or upload PNG, JPEG, SVG, or WEBP files to preview them under each simulation filter.