PNG Files

A Portable Network graphic (PNG) file is a pixel based image that can be used to display images on the Web (some older browsers may not support the use of this format). The start of the PNG file was in an alternative to the proprietary Compuserve GIF file format. It will support 24-bit color, using a lossless compression approach.

The PNG file settings that can be controlled are:

• Transparency information
• File defined background color
• Adobe Gamma correction

Use of a PNG file in a Web project is a good fit. However, because of the lack of support for the CMYK color space, and the fact that there can be no color separations, the PNG file is not a good fit in a print production cycle.