Utilities tool
Color Blindness Simulator
Simulate how an image may appear under common color vision deficiencies directly in your browser.
Processed in your browser unless a tool explicitly says otherwise.
Use the toolNo account required
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Upload an image
JPG, PNG, WebP, BMP, GIF, AVIFDrag and drop a photo or choose a file to simulate color vision deficiency.
Color vision simulations are approximations and are not medical or diagnostic tests.
Your image is processed locally in your browser and is not uploaded.
How it works
A focused workflow for a focused task.
Enter the information the tool asks for, review the result, and use the output for your next step. Zobnu keeps browser-first utilities straightforward and transparent.
Privacy note
Your inputs stay in this browser unless the tool clearly indicates that an external provider is required.