Image Formats
While the number of image formats is large, there are a few that are well known and commonly used. In this chapter, we will only mention the image formats that are most often associated with Web browsers: GIF, JPEG, and PNG; as well as a sample format called ch5, which we will use for illustrative purposes throughout this chapter.
GIF: Graphics Image Format
The Graphics Image Format (GIF; also referred to as CompuServe GIF format) represents each pixel using 3 bytes, depicting its red, green and blue color components. This format takes all the unique sets of color components within the GIF image(not exceeding 256) and puts them into a color table. This limits the number of colors that can be represented in a GIF image to 256 out ...
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