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About Color Blindness Simulator
Free online color blindness simulator. Upload images to simulate 8 types of color vision deficiencies including protanopia, deuteranopia, tritanopia, and achromatopsia. Essential for designers and developers to verify color accessibility.
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User Guide
Key Features
- Free online color blindness simulator
- Upload images to simulate 8 types of color vision deficiencies including protanopia, deuteranopia, tritanopia, and achromatopsia
- Essential for designers and developers to verify color accessibility
How to Use
- Open the tool page — no installation needed
- Upload an image to simulate (JPG, PNG, or WebP; drag-and-drop or click to upload, up to 20 MB)
- Pick a color blindness type to see the live simulation, then click "Download Result" to save the image if you like
Important Notes
- This tool is completely free and requires no sign-up
- Everything runs locally in your browser — your data never leaves your device
Frequently Asked Questions
What is Color Blindness Simulator?
Free online color blindness simulator. Upload images to simulate 8 types of color vision deficiencies including protanopia, deuteranopia, tritanopia, and achromatopsia. Essential for designers and developers to verify color accessibility.
How do I use Color Blindness Simulator?
Open the tool page — no installation needed Upload an image to simulate (JPG, PNG, or WebP; drag-and-drop or click to upload, up to 20 MB) Pick a color blindness type to see the live simulation, then click "Download Result" to save the image if you like
What should I know before using Color Blindness Simulator?
This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device
Is Color Blindness Simulator free to use?
Yes, Color Blindness Simulator is completely free. No download or installation required — it runs right in your browser.