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User quotes:
I just wanted to let you know I think your site is awesome. As a high school student, I've never really told anyone that I was colourblind - until it was brought up in a biology class. Being the curious folks, high school students are, I was bombarded by 'what colour is this, what colour is this?' and 'what *can* you see?'. Thanks to your site, I can actually show them what it's like to be colourblind, plus explaining some facts to me. Just wanted to show my appreciation,
-Paul F.
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Select the type of color vision to simulate:

deutan hats Deuteranope (a form of red/green color deficit)
protan hats Protanope (another form of red/green color deficit)
tritan hats Tritanope (a blue/yellow deficit- very rare)

Image file:


  • Vischeck 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 Vischeck on each slide.
  • If you have many images to process, consider downloading Vischeck to run on your own computer.)
  • Uploading a large file may take a while - please be patient!

Privacy policy. Contact: Last modified 2014-Feb-04 23:11 GMT.