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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
VIC - Extension Details
Date Added: January 01, 1970
File Extension:  .VIC
Description 1: .VIC is a file extension tied with the VICAR Image filetype. It refers to a multidimensional imaging format that is used for astronomy, biomedical, geology and cartography program applications. This kind of file format, along with the .VIC file extension, was originally created and developed for the unmanned planetary spacecraft of Jet Propulsion Laboratory.
File Type:   Image file
Mode: Binary
Program(s) to Open:  Mac and Windows: XnView
Common:
Extension: