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My fiancée happens to be colorblind, and being somewhat of an artist I had a hard time understanding what colorblindness meant and then visualizing what exactly he saw. This Vischeck website is amazing -- I love being able to almost "look through his eyes." He was also really interested in the Daltonize tool -- the painting demonstration made him wonder just how many "roads" he's missed before.
-Nicole L.
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Try Daltonize on Your Image Files

Sorry- the Daltonize ImageEngine appears to be down at the moment. Please try again later.


  • 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!

Privacy policy. Contact: Last modified 2009-Nov-01 18:38 GMT.