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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
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VAG - Extension Details
Date Added: February 09, 2008
File Extension:  .VAG
Description 1: PlayStation as well as PlayStation Portable games use the fourbit compressed sound format and have the .VAG file extension attached. The files are compressed with the aid of ADPCM, or Adaptive Differential Pulse Code Modulation, encoding. They come out in mono sound format. Associated applications to .VAG include Awave Studios, a multipurpose audio software tool capable of reading a host of file formats that carry audio and come from different trackers, platforms, mobile phones and synthesizers.
File Type:   Audio/Music file
Mode: Binary
Program(s) to Open:  Windows: MFAudio, Nullsoft Winamp with incube plugin
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