WhatExt File Extensions Database
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A file extension database is a collection of information about file formats, including their extensions, associated applications, and descriptions. File extensions are typically three or four characters long and are appended to the end of a filename. They are used by operating systems and software applications to identify the type of file and determine how to open it.
The File Extensions Database is a valuable resource for anyone who works with files. It can be used to identify unknown file types, find the right application to open a file, and learn more about file formats. The database is constantly being updated with new information, so it is a reliable source of information.