See how images look to people with color vision deficiencies.
Upload an image and simulate how it appears to people with different types of color vision deficiencies — protanopia, deuteranopia, tritanopia, and achromatopsia. Runs entirely in your browser.
How to Use Color Blindness Simulator
- Select or drag and drop your file(s) into the Color Blindness Simulator workspace.
- Adjust the custom parameters, formats, or options to your requirements.
- Preview the processed output in real time and download the result instantly to your device.
Key Capabilities & Features
- 100% Client-Side Processing: Your data never leaves your computer or mobile device.
- Fast & Instant: Powered by modern WebAssembly and HTML5 browser APIs without upload delays.
- No Signups & No Watermarks: Completely free and unlimited for personal and professional use.
Privacy & Security Guarantee
At Toolbo, privacy is built directly into the software architecture. Color Blindness Simulator processes all inputs directly in client-side browser memory. There is no server upload, no remote file caching, and zero tracking of your document or media contents.
Frequently Asked Questions
- Which color vision deficiencies can be simulated?
- Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), and Achromatopsia (monochromacy/total color blindness).
- Why is color vision testing important for UI design?
- It ensures that critical UI elements, charts, and buttons remain distinguishable to all users without relying solely on color cues.
Related Online Tools
- Contrast Checker — Check color contrast for accessibility compliance.
- Color Palette Generator — Generate harmonious color palettes using color theory.
- Color Palette Extractor — Extract dominant colors from any image.