Color Blindness Simulator - Accessibility Preview
Free color blindness simulator. Preview a color or uploaded image as seen under protanopia/deuteranopia/tritanopia locally in your browser to check design accessibility. 100% local, no upload.
About Color & Design
Simulate red/green/blue color blindness locally โ preview colors or an uploaded image. This tool runs entirely in your browser locally โ no file upload, your privacy is protected, and speed is unaffected by network.
FAQ
Will my files be uploaded?
No. All processing happens locally in your browser; files never leave your device.
Which formats / scenarios are supported?
color blindness, color blindness simulator, accessibility, color simulation, protanopia, design check and more can be done on this page.
Do I need an internet connection?
After the page loads, conversion/computation runs locally and works offline (except features relying on external fonts/libraries).