What is the purpose of Global Color Table? - GIF

What is the purpose of Global Color Table?

- Colored table is represented by a sequence of bytes that represents Red, Green and Blue color triplets.

- Global Color Table is used for images with plain text extensions.

- Every global color table’s presence is marked by the Global Color Table Flag.

- The GCT Flag is set to 1 in Logical Screen Descriptor.

- The block contains the number of byes equal to 3 x 2 size of global color table + 1

- One Global Color Table is present per Data Stream.