Graphical Interchange Format File (.gif) is a type of highly compressed image. For each image GIF typically allow up to 8 bits per pixel and up to 256 colours are allowed across the image.
Learn more about this file format here
GroupDocs.Viewer (in GroupDocs.Viewer.dll) Version: 20.6
public static readonly FileType GIF
Public Shared ReadOnly GIF As FileType
static initonly FileType^ GIF