COMPUTER NETWORKING

Detailed explanation-1: -The term thumbnail came into existence for still images. It’s a reference to the human thumbnail and is used to describe the small size of an image, as in it’s so small it’s the size of a thumbnail. This term was used in this way to refer to images back in the 17th century.

Detailed explanation-2: -For example, software that lets users manage multiple images often provides a miniaturized version of each image so that they don’t have to remember the file name of each image. A thumbnail also means a small and approximate version of a full-size image or brochure layout as a preliminary design step.