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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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NKI - Extension Details
Date Added: September 09, 2008
File Extension:  .NKI
Description 1: NKI is a file extension linked to the software instrument format that KONTAKT from Native Instruments has. Described as a KONTAKT Instrument file, the .NKI file extension refers to a professional sampling program. This file format includes samples of instruments or other types of sounds that allow for playback through MIDI data.
File Type:   Audio file
Mode: Binary
Program(s) to Open:  Mac and Windows: Native Instruments KONTAKT
Common:
Extension: