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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
AIFR - Extension Details
Date Added: March 01, 2009
File Extension:  .AIFR
Description 1: .AIFR file extension is linked with Audio Interchange File Format. This is the AIFF or Audio Interchange File Format developed by Apple Computer. This file format is used to store highquality musical instrument info and sampled audio. .AIFR file extension is also associated with Windows Media Player an application from Microsoft Corporation that lets users enjoy music, pictures, video and recorded TV. Users can enjoy the easytouse features, simple solutions and new design features.
File Type:   Audio & Music File
Mode: Binary
Program(s) to Open:  Windows & Mac: Windows Media Player
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Extension: