Color Vision Simulator
Preview images with protan, deutan and tritan color vision simulations.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
This is an approximate design preview. Individual perception varies; distinguish important information with labels, shapes and patterns as well as color.
Original
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Choose a simulation, compare with the original and export a PNG preview.
- 03
Review the result and download the file.
Details and tips
How it works
The full-severity Machado matrices transform linear sRGB values, which are then encoded back to sRGB. Image dimensions and transparency remain unchanged.
Made for everyday images
Review charts, interface screenshots and information graphics for color-dependent distinctions.
Frequently asked questions
Are images uploaded?
No. Processing, previews and downloads stay on your device.
What are the limits?
JPG, PNG and WebP, up to 250 MB, 8192 pixels per side and 16 million pixels. Expanded output must also fit these limits. Animation uses one still frame.