Play a joke on my sister's expression pack

GIF adopts LZW(lem pel-Zev-Welch) compression algorithm, which supports up to 256 colors. Because of this feature, GIF is more suitable for pictures with less colors, such as cartoon shapes, company logos and so on. If you need to use true color, then the expressive power of GIF is limited. GIF usually comes with its own color palette, which stores all the colors you need. In Web applications, the file size of an image will obviously affect the download speed, so we can optimize the color palette according to the characteristics of GIF with color palette, and reduce the number of colors used in the image without affecting the image quality (some unused colors in the image can be discarded).

The biggest difference between GIF format and other image formats is that it is completely designed as a general standard. Due to the popularity of CompuseServe network, many platforms support GIF format. Compusurve promotes GIF through free distribution format specification, but requires that the software using GIF file format should include a description of its copyright information.