PCauthorities.com presents…
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
T3X - Extension Details
Date Added: January 01, 1970
File Extension:  .T3X
Description 1: .T3X is an extension tied with the TYPO3 Compressed Extension general filetype. This file adds extra capabilities and functions to the Web content management framework known as TYPO3. Find TYPO3 extensions saved in a type of compressed "exchange format that is downloadable from the World Wide Web. Disabling and enabling .T3X files are done using the Extension Manager that comes included in TYPO 3.5 and later versions.
File Type:   Plugin file
Mode: ASCII
Program(s) to Open:  Windows: TYPO3 Extension Manager
Common:
Extension: