February 2006
Intermediate to advanced
826 pages
63h 42m
English
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8-bit palette images
Like GIFs, PNGs can be saved as 8-bit indexed color, containing up to 256 colors, the maximum number that 8 bits of information can define. Indexed color is discussed in detail in Chapter 29.
Although 8-bit is the maximum, PNGs may be saved at 1-, 2-, and 4-bit depths as well, thus reducing the maximum number of colors in the image (and the file size).