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Color Blindness Simulator online, free
Simulate how images and graphics appear to people with Protanopia, Deuteranopia, Tritanopia, and Achromatopsia.
- Runs in your browser — no upload
- Free, no sign-up, no watermark
- JPEG
- PNG
- WebP
- AVIF
- GIF
- BMP
- TIFF
How to use Color Blindness Simulator · Color Blindness Simulator — frequently asked questions
How to use Color Blindness Simulator
- 1
Add your JPEG, PNG and WebP file
Drop a file on the page, paste it, or click Select Files. Nothing is uploaded — it opens straight in your browser.
- 2
Fine-tune the settings
Set deficiency type in the Fine-tune panel, or keep the defaults — they suit most files.
- 3
Run Color Blindness Simulator
Press the start button. Processing happens on your device, usually in seconds.
- 4
Download the result
Save the finished file, or continue with another tool without downloading in between.
What Color Blindness Simulator can do
- Deficiency Type: deuteranopia, protanopia, tritanopia, achromatopsia and all
- Private by design — files are processed in your browser and never uploaded
- Free with no sign-up, no watermark and no daily limit
Common tasks
Color Blindness Simulator — frequently asked questions
Is Color Blindness Simulator free?
Yes. Color Blindness Simulator is completely free on Sada Files. There are no fees, subscriptions, or watermarks applied to simulated images.
Do I need an account to simulate color vision deficiencies?
No. There are no user accounts or registration steps. Select your image, choose a vision deficiency type, and inspect the simulated preview immediately.
Are my images uploaded to the server?
No. In your browser and in native Sada Files apps, simulation is processed directly on your device via HTML5 canvas and SVG filters. Your images remain private and never leave your hardware.
Which color vision deficiencies can be simulated?
The tool simulates Protanopia (red-blind / L-cone deficiency), Deuteranopia (green-blind / M-cone deficiency), Tritanopia (blue-blind / S-cone deficiency), and Achromatopsia (complete color blindness / monochromacy), with variable severity percentages.
Which image formats can I simulate?
Color Blindness Simulator supports JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF formats up to the memory limit of your device.
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