What is GIF ?
GIF which stand for Graphics Interchange Format, are lossless bitmap graphics which was created by CompuServe and was first introduced in 1987. The format supports up to 8 bits per pixel for each image, allowing a single image to reference its own palette of up to 256 different colors chosen from the 24-bit RGB color space. Since then it has been adopted as a common format for Internet images, due in part to its wide support and portability. It also provides more control over image compression when compared with formats such as PNG. The downside is that GIF files are much larger than PNG files, resulting in slower transmission speeds when downloading or uploading them across networks such as the Internet or on mobile devices.