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Thank you for website. I am a 60year old red/greencolour blind person (male almost needless to say) and have had many (sometimes heated) discussions about its impact. Your site has given me the first ever inkling as to the degree and effect of my colourblindness and it has been (and continues to be) fascinating. I am stil considering the implications.
-Des S.
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Original Image Deuteranope Simulation
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  • Daltonize accepts most common image formats. However, we recommend that you use PNG or JPEG format for uploading large images as these tend to transfer faster.
  • For PowerPoint slides, you can save all your slides as PNG images with "Save As..." and run Daltonize on each slide.
  • Uploading a large file may take a while - please be patient!

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