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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
XXE - Extension Details
Date Added: March 03, 2009
File Extension:  .XXE
Description 1: File extension .XXE is associated with the XXEncoded File. XXE files are sevenbit ASCII text files that allow for sending via email minus the risk of getting corrupted. This type of file was created for earlier email programs that were not capable of recognizing binary attachments. Todays email applications can automatically convert binary attachments. Decode .XXE files with the help of Web Utils Online XXDecoder Tool.
File Type:   Encoded file
Mode: ASCII
Program(s) to Open:  Windows: ConeXware PowerArchiver, Corel WinZip, PicoZiP, Spadix ClikView, WinRAR
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