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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
SDPX - Extension Details
Date Added: January 01, 1970
File Extension:  .SDPX
Description 1: File extension .SDPX is associated with the Kodak Cineon image format. It refers to the image created with the Cineon film system from Kodak. The .SDPX files are used for transferring film images onto a digital format for electronic compositing, enhancement and manipulation. The .SDPX file outputs or goes back to film minus any loss in image quality.
File Type:   Bitmap Image file
Mode: Binary
Program(s) to Open:  Associated application: Adobe Creative Suite from Adobe Systems Incorporated
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