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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:
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SAR - Extension Details
Date Added: January 01, 1970
File Extension:  .SAR
Description 1: The .SAR file extension has to do with the archive format for packaging and deployment of application programs created with the JBoss or older versions of the Phoenix development software. Users can extract files contained in a .SAR file and install them onto Unix computer systems with the help of a SAPCAR program.
Description 2: .SAR files are linked to the Sibelius Arrange Style filetype. These files store musical arrangements that are used by the Sibelius music notation program. With this software, users can compose songs featuring similar styles from the same standard or basic configuration. The .SAR files often include track configurations, instruments, tempo, meter as well as other settings.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Mac and Windows: Sibelius music notation software
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