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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
XLF - Extension Details
Date Added: April 09, 2008
File Extension:  .XLF
Description 1: The .XLF file extension is an XMLformatted file that is based on the XML Localization Interchange File Format (XLIFF) specification crafted by the OASIS Technical Committee. It serves as a standard mode of localizable data and related info exchange in the lossless format. XLIFF documents contain one or several elements. Such elements identify data sources locations like databases, images, property files and others.
File Type:   Text file
Mode: ASCII
Program(s) to Open:  Mac, Windows and Unix: Any text editor
Common:
Extension: