What does a file extension tell you?
1 answer
A file extension is a suffix added to the end of a filename that indicates the format or the type of file it is. It typically consists of three or four letters following a period (e.g., .txt, .doc, .jpg). A file extension can provide information about the file's content, the application used to create or open it, and the operating system’s recognition of the file type. It allows users and computer systems to quickly identify and associate files with the appropriate programs or software needed to open and work with them.