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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
JPX - Extension Details
Date Added: January 01, 1970
File Extension:  .JPX
Description 1: .JPX file extension is linked with JBuilder Project File. This is the file extension for the project file utilized/generated by JBuilder an application that is designed to provide users with integration across the lifecycle of application development. Developers are also provided with seamless access to analysis and design, requirements management, quality and performance assurance, J2EE deployment and software configuration management. JBuilder is owned and developed by Borland Software Corp.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: Borland JBuilder
Common:
Extension: