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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
JPEGENX - Extension Details
Date Added: January 01, 1970
File Extension:  .JPEGENX
Description 1: .JPEGENX file extension is linked with Egis Encrypted JPEG File. It is the file extension utilized by Egis a main component of Acer notebook and desktop PCs. This application allows users to: encrypt files and folders, embed message and encryption of attachment/s for MS Outlook and Lotus Notes. Egis can also embed file transfer encryption for Windows Live Messenger and MSN Messenger, and it also provides Personal Secure Disk.
File Type:   Encoded and Encrypted File
Mode: ASCII
Program(s) to Open:  Windows: Egis
Common:
Extension: