What is a File Type in the Computer?
A file type is something like "image," "video," "audio," or "text document" that describes what sort of data a file in your computer contains. Specific file types consider the specific format of the data, such as "PNG image," "JPG image," "MP4 video," "PDF document," and so on.
The type of a file in your PC is usually determined by its file extension, which is hidden by default on Windows.