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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
UTX - Extension Details
Date Added: January 01, 1970
File Extension:  .UTX
Description 1: .UTX is the extension for files belonging to the Unreal Texture Package type. They contain textures that are used in creating arenas and characters for the Unreal Tournament. A UTX game file has textures based on the Unreal Engine that are utilized for games. The Unreal Engine is one of the best game engines worldwide. Many games are based on this one engine and feature a similar file format as well as extensions.
File Type:   Game file
Mode: Binary
Program(s) to Open:  Windows: Epic Games UnrealEd
Common:
Extension: