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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
ZFSENDTOTARGET - Extension Details
Date Added: January 01, 1970
File Extension:  .ZFSENDTOTARGET
Description 1: .ZFSENDTOTARGET is the extension tied with zipped files that are created by rightclicking a certain file or folder in Windows and then choosing Send To>Compressed Folder. Users can decompress such files in Windows or by using other decompression programs. Windows XP has this feature, but it can also be enabled in Windows ME. Simply select "Add/Remove Programs>Windows Setup>System Tools>Compressed Folders.
File Type:   Compressed file
Mode: Binary
Program(s) to Open:  Windows: Corel WinZip, Microsoft Windows ME or later
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