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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
P - Extension Details
Date Added: January 01, 1970
File Extension:  .P
Description 1: The .P extension is tied to the MATLAB binaryruntime Pfile. MATLAB refers to the highlevel technical computation language and interactive environment for data visualization, numeric calculation, algorithm development and data analysis. With the MATLAB product, solving technical computing problems is done faster. Use MATLAB in different applications communications, test and measurement, computational biology, signal and image processing, control design, and financial modeling and analysis. MATLAB serves up plenty of features for documenting as well as sharing a users work.
File Type:   Binary file
Mode: Binary
Program(s) to Open:  Associated application: MATlab from MathWorks, Inc.
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