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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
PAM - Extension Details
Date Added: January 01, 1970
File Extension:  .PAM
Description 1: .PAM is short for Portable Arbitrary Map. It is the image format for the lowest common denominator 2dimensional map format. Though designed for use on a host of graphics, the .PAM format can theoretically be utilized for any type of data arranged as twodimensional rectangular arrays. Another view sees the .PAM format as one for data that are arranged as threedimensional arrays.
File Type:   Bitmap Image file
Mode: Binary
Program(s) to Open:  Adobe Photoshop and Adobe Creative Suite
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