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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
XPM - Extension Details
Date Added: March 03, 2009
File Extension:  .XPM
Description 1: File extension .XPM is linked to the Micro Planner Manager File. These are planning project files that Micro Planner Manager created. Business managers use the XPM file format to track and manage individual projects. XPM files can support upwards of 1500 operations for every project done. Micro Planner is capable of merging and importing data from multiple .XPM files and Microsoft Project .MPX files.
Description 2: The .XPM extension is associated with X11 Pixmap Graphic. This file features a Raster image format that the X Windows system uses to store grayscale, color, and black and white pixmap data. Like .XBM files, XPM files consist of C source code where every pixmap is defined in terms of a static character array.
File Type:   Image file
Mode: Binary
Program(s) to Open:  Windows: ACDSee Photo Manager, Corel Paint Shop Pro, IrfanView, The GIMP, XnView Macintosh: The GIMP, XnView
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