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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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NTN - Extension Details
Date Added: June 02, 2009
File Extension:  .NTN
Description 1: .NTN is the file extension that has something to do with the NOTION Song File. It concerns musical scores that are composed with the NOTION program. The NTN files save music notation in the MIDI format, allowing for playbacks in NOTION using various instrument samples taken from the London Symphony Orchestra.
Description 2: File extension .NTN is associated with the NOTION Song File. The .NTN file refers to musical scores that are composed with the help of NOTION. With .NTN files, music notation is saved in MIDI format that allows for playback in NOTION using instrument samples taken from the London Symphony Orchestra.
File Type:   Audio file
Mode: Binary
Program(s) to Open:  Mac and Windows: VirtuosoWorks NOTION
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