Sams Teach Yourself Internet and Web Basics All in One
by Ned Snell, Bob Temple, T. Michael Clark
Adjusting Color Depth
Color depth is a way of describing how many colors your hardware and software are capable of displaying. The buzzwords most often used are 8-bit, 16-bit, and 24-bit. Of course, color depth is sometimes described by the actual number of colors being displayed, such as 256 colors or 16.7 million colors.
Hardware is the real determining factor. Your Web browser, for example, will display as many colors as your system can use. The next limiting factor is the type of image being displayed. GIFs are capable of displaying only 256 separate colors. However, these colors can be chosen from all 16.7 million available colors. JPGs can display up to 16.7 million colors, which makes the JPG format a popular choice for photographs and ...
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