GIF (Graphics Interchange Format) is an 8-bit-per-pixel bitmap image
format that was introduced by CompuServe in 1987 and has since come into
widespread usage on the
World Wide Web
due to its wide support and portability.
Source: wikipedia.org
Gigabit
A gigabit is a unit of information or computer storage, abbreviated Gbit or sometimes Gb. 1 gigabit = 109 = 1,000,000,000 bits