About This Tool
The "Camera Color Vision Simulator" uses your smartphone or PC camera to check in real time how the scene in front of you or printed materials appear to people with various color vision types (Protanopia, Deuteranopia, etc.).
From a Color Universal Design (CUD) perspective, it is optimized for on-site visibility checks of flyers, packaging, signage, and more.
How to Use / Features
- Filter switching: Tap the buttons at the bottom of the screen (Normal, P-type, D-type, T-type, A-type) to switch color vision simulation in real time.
- Zoom: On supported devices, a slider appears allowing you to zoom in on subjects without losing image quality.
- Save image (tap): Briefly press the shutter button to pause the video. Press "Save Image" or long-press the image on mobile to save the simulation result.
- Record video (long press): Press and hold the shutter button to start recording video. Release to save the video file (mp4, etc.) via the device's share menu or download.
Privacy and Safety
Camera footage is never sent to any server. All color conversion simulation is performed solely within your device's browser (GPU/WebGL), and no image or video data is unintentionally saved or transmitted externally.
FAQ / Troubleshooting
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Q. "Camera access is not permitted" appears
A. Camera access is blocked in your browser or device settings. Please change it to "Allow" using the steps below.
• iPhone / iPad: Settings app > Safari or Chrome > Set "Camera" to "Allow (or On)"
• Android: Settings app > Apps > Chrome > Permissions > Allow "Camera"
*After changing settings, please reload the browser page. -
Q. I can't find the recorded video or saved image (mobile)
A. Images saved via long-press go to the Photos app (Camera Roll). For recorded videos, select "Save Video" from the share menu that appears after recording to save to your Camera Roll.
Technical Background and Disclaimer
- This simulator is an "approximate reproduction" of color appearance based on specific color vision models (Vienot 1999, Machado 2009, etc.) and does not guarantee how people with actual color vision characteristics perceive colors. Perception varies between individuals.
- This tool is intended for education, awareness, and design reference purposes, and cannot be used for diagnosing color vision deficiency or making medical judgments.
- Due to the nature of real-time image processing in a browser, performance may slow down depending on your device's specifications.
- The developers assume no responsibility for any damages or disadvantages resulting from use of this tool.