Thumbnail Definition

A thumbnail is a small, reduced-size image or picture that represents a larger image, video, or web page. Thumbnails are often used in image and video galleries, search results, and web pages to give users a preview or quick reference to the full-sized content. Thumbnails are usually displayed in a grid or a list, and they can be clicked or tapped on to access the full-sized content. In many cases, thumbnails are generated automatically by software or platforms based on the original content, but they can also be manually created and customized by designers or content creators.