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Why are my pixels changed on some computers

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Marka83
Marka83
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I use Canvas to getImageData. On most of our client's computers retrieved pixels are same as in the original image. But, for few users some of the R,G,B components are raised or lowered by 1.

Image is PNG with only IHDR, IDATA and IEND chunks. So there is no color correction data. I must say that on these computers everything works ok on Chrome.

Images are DATA URIs, if it makes any difference.

I use Canvas to getImageData. On most of our client's computers retrieved pixels are same as in the original image. But, for few users some of the R,G,B components are raised or lowered by 1. Image is PNG with only IHDR, IDATA and IEND chunks. So there is no color correction data. I must say that on these computers everything works ok on Chrome. Images are DATA URIs, if it makes any difference.

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smo
smo
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A better placve for this kind of a question would be Mozilla Development network, starting for instance at canvas root page