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The PNG format (Portable Network Graphics) was created to be a replacement for the GIF format. It is patent free open standard with a number of advantages over GIF.

One of the few problems with PNG images is that it’s difficult, not to say impossible, to match colors in CSS and GIF images with does in a PNG image. This is a major headache for web designers and according to information I have found on the web the reason is the PNG gamma correction function.

Read more about PNG and the gamma correction problem on The Sad Story of PNG Gamma “Correction”.

Now on to how to fix the gamma correction problem.