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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
NCD - Extension Details
Date Added: January 01, 1970
File Extension:  .NCD
Description 1: Nero CoverDesigner uses the .NCD file extension. It has to do with images or artwork utilized for CD or DVD labels creation. Nero CoverDesigner refers to the userfriendly application used to create or design individual CD and DVD covers as well as labels. This program gives users two options. They can either use their own ideas, or opt for using various templates to create booklets, CD covers and more.
File Type:   Document file
Mode: Binary
Program(s) to Open:  Windows: Nero Cover Designer (part of Nero 6.6 or later)
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