User quotes: I am a high school student and my twin and I are colorblind, and most of our peers didn't believe or understand, the website really helps clear it up. Thanks for letting us see what we may be missing!!
-James A., Kansas
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Deuteranope Simulation of Daltonized Image
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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
Uploading a large file may take a while - please be patient!