Free Colorblind Simulator Online — 100% Free, No Hidden Costs
Looking for a completely free colorblind simulator? FlexyPdf's Colorblind Simulator is 100% free with no hidden costs, no premium tiers, and no usage limits. Unlike other tools that restrict features behind paywalls or limit the number of free operations per day, our Colorblind Simulator gives you full access to every feature without spending a penny. There is no trial period — the tool is free today and will remain free. All processing happens locally in your browser, which means we have no server costs to pass on to you. Whether you need to use Colorblind Simulator once or a hundred times a day, it costs nothing.
How to Use Colorblind Simulator
Select Simulation Type
Choose from 7 color blindness types to simulate: Protanopia, Deuteranopia, Tritanopia, and more.
Upload Image
Upload an image to see how it appears to people with the selected color vision deficiency.
Compare & Download
Compare original and simulated images side by side. Download the simulated version.
Features
7 Simulation Types
Simulates Protanopia, Deuteranopia, Tritanopia, Protanomaly, Deuteranomaly, Tritanomaly, and Achromatopsia.
Side-by-Side View
Compare original and simulated images side by side for clear visualization.
Color Swatches
See how standard colors (red, green, blue, etc.) transform under each simulation.
Research-Based
Uses color transformation matrices based on Brettel, Vienot & Mollon (1997) research.
Benefits of Using Colorblind Simulator
Completely Free
Use Colorblind Simulator without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your Design Tools Workflow
These free tools work seamlessly with Colorblind Simulator to handle every step of your workflow.