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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
XBM - Extension Details
Date Added: December 02, 2009
File Extension:  .XBM
Description 1: The .XBM file extension is tied with the .X11 Bitmap Graphic. It refers to an image format that the X Window system for keeping or storing cursor as well as icon bitmaps uses. An .XBM file is comes written in the C programming language. A C compiler rather than an image application program is utilized compiling .XBM files.
File Type:   Image file
Mode: Binary
Program(s) to Open:  Windows: ACDSee Photo Manager, Corel Paint Shop Pro, IrfanView, XFree86, XnView Macintosh: XFree86, XnView
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