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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
AJP - Extension Details
Date Added: June 11, 2008
File Extension:  .AJP
Description 1: .AJP file extension is linked with CCTV Video File. This is the video format utilized by closedcircuit television [CCTV] security cams and digital video recording equipments. .AJP files may be exported to DVDs or CDs from JPEG2000 DVRs. The standard .AJP file format is supported by various programs and the file can be opened directly. You can download the AJP Player from jpeg2000support.com.
File Type:   Audio and Music File
Mode: Binary
Program(s) to Open:  Windows: AJP Player
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