The .gif format is widely used due to the simplicity of implementing the specification. Although the file size is relatively uncompressed, gif's can easily be

The .gif format is widely used due to the simplicity of implementing the specification. Although the file size is relatively uncompressed, gif's can easily be decoded and rendered on basically any device. Video formats which save 97% of space have much smarter compression algorithms, which are much harder to implement, which means less device support...less usage...