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.
A file extension is a suffix added to the end of a computer file name to identify its format or type. It typically consists of a dot followed by a series of letters or numbers. The file extension provides information about the file's encoding, structure, or intended use. It helps both users and computer systems determine how to handle and open the file. For example, a file with the extension ".jpg" indicates that it is an image file in the JPEG format, while a file with the extension ".docx" suggests it is a Microsoft Word document in the modern XML-based format. File extensions are used across different operating systems and software applications to enable a standardized way of identifying file types.
