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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
NDF - Extension Details
Date Added: January 01, 1970
File Extension:  .NDF
Description 1: .NDF is the extension linked with the proprietary NimbleGen software package NimbleScan. This program enables automated designspecific grid placement on NimbleGen array images, ChIPchip as well as resequencing arrays, corresponding feature intensity raw values extraction, analysis reports for expression generation, and raw intensity values linkage with corresponding probe description parameters. NDF files include info on custom microarray designs and are described as tabdelimited text files.
File Type:   Text file
Mode: ASCII
Program(s) to Open:  Open with NimbleScan NimbleGen Design File program
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