See how your designs look to people with color vision deficiency.
Upload an image to simulate
Color Blindness Simulator is a free, browser-based tool designed for developers, designers, writers, and everyday users. Simulate color blindness on any image. Protanopia, deuteranopia, tritanopia. Free online color blindness simulator. Everything runs locally in your browser using JavaScript — no data is ever sent to a server, making it completely private and secure. The tool is designed to be intuitive and beginner-friendly while still offering advanced features for power users. It loads instantly with no installation required and works offline once loaded. Use it as often as you need — there are no daily limits, no watermarks, and no hidden fees.
Who is this for? Color Blindness Simulator is ideal for professionals, students, freelancers, and hobbyists who want quick, reliable results without installing software or creating accounts. Whether you are on a laptop, tablet, or phone, it works seamlessly in any modern browser.
Yes! Color Blindness Simulator is completely free with no signup required. It runs entirely in your browser — your data never leaves your device.
Enter your data in the input fields above. Results are generated instantly in your browser. You can copy, download, or share the output.
Absolutely. Color Blindness Simulator runs 100% client-side in your browser using JavaScript. No data is uploaded, stored, or shared with any server. Your privacy is guaranteed.