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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
TG - Extension Details
Date Added: March 12, 2008
File Extension:  .TG
Description 1: A .TG file has to do with Gzip Compressed Tar Archive. It is a collection of files that is saved as a TAR archive and then compressed via .GZIP compression. This type of file format is ordinarily used to archive groups of files on a Unix computer system. The files also go by the name "tarball. Tar archives compressed using Gzip also sometimes utilize the .TGZ extension.
File Type:   Compressed file
Mode: Binary
Program(s) to Open:  Windows: Smith Micro Stuffit Deluxe, WinRAR, WinZip 12 Pro, Zipeg Macintosh: Smith Micro Stuffit Expander, Zipeg Unix: gunzip, tar
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