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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
UVF - Extension Details
Date Added: January 01, 1970
File Extension:  .UVF
Description 1: The .UVF file extension is short for Uncertain Value Format. It is an extension to the .CSV (commaseparated value) file format that is used when handling Netica uncertain values. Netica refers to a Bayesian network development program software that helps with managing a particular uncertainty in engineering, ecology, medicine, ecology or business.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: Norsys Netica
Common:
Extension: