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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
DXR - Extension Details
Date Added: January 01, 1970
File Extension:  .DXR
Description 1: .DXR file extension is linked with Green Building Advisor File. Green Building is an application that focuses on construction which can be applied to commercial and public buildings, as well as private homes. Green Building is also referred to as "sustainable building due to its approach. This application provides stepbystep guidelines to users from building selection to heating system installation. Green Building is owned and developed by Green Building Advisor.
Description 2: .DXR file extension is linked with Adobe Acrobat file. Adobe Acrobat is an application that offers users, both personal and professional, the ability to create, control and combine Adobe PDF documents for efficient, easy and secure distribution, collaboration, and data collection. .DXR file extension and Acrobat are owned and developed by Adobe Systems Inc
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows & Mac: Adobe Acrobat or Acrobat Reader
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