PCauthorities.com presents…
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
NRT - Extension Details
Date Added: September 09, 2008
File Extension:  .NRT
Description 1: .NRT is the file extension tied with the ringtone format that Nokia cellular phones use. Files with the .NRT extension save melodies in the form of MIDI data, something similar to .MID files. NRT files allow for conversion to other formats that are more common. All that is needed to do this is a Nokia Sound Converter, which comes included in the Nokia PC Suite package.
File Type:   Audio file
Mode: Binary
Program(s) to Open:  Windows: Nokia Sound Converter
Common:
Extension: