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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:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
D00 - Extension Details
Date Added: January 01, 1970
File Extension:  .D00
Description 1: .D00 file extension is linked with Adlib Sound File. This file extension is linked with Winamp Winamp an application which offers fast, highfidelity, flexible music and video player/s for Windows. It supports: CD, MP3, WAV and other types of audio format; custom skins or appearance; audio visualization; audio effect plugins. Other features include: freeform skins, new decoder/s, advanced media library and builtin cross fade. .D00 file extension and Winamp are owned and developed by Nullsoft.
File Type:   Audio and Music File
Mode: Binary
Program(s) to Open:  Windows: Winamp
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