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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:
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MRF - Extension Details
Date Added: January 01, 1970
File Extension:  .MRF
Description 1: .MRF file extension is linked with MeterReading Data File. This is the file extension for the data file utilized by MeterReading a program that allows users to enter and visualize a storage or meteroriented consumption data in a structured form. It is based on entered data and a prediction for consumers can be estimated. Determining the consumption ratios [i.e. energy consumption within energy technology] is possible. MeterReading is owned and developed by Dataconomy.
Description 2: .MRF file extension is linked with MultiEx Commander Resource File. This is the file extension for the resource file utilized by MultiEx Commander is a computer game application that uses file extraction and importation from/into hundreds of gaming resources. This application provides an easytouse interface as well as supports various formats. MultiEx Commander is owned and developed by XeNTaX.
Description 3: .MRF file extension is linked with GPS Pathfinder Office Geoid Grid File. This is the file extension for the Geoid grid file utilized by GPS Pathfinder Office a program that adds value to GIS data collection and data maintenance projects. It enables users to preplan their field sessions to allow more productive field work. Files can also be imported from various GIS and database formats. It supports Windows 2000, XP and Vista. GPS Pathfinder Office is owned and developed by Trimble.
File Type:   Data File
Mode: ASCII
Program(s) to Open:  Windows: GPS Pathfinder Office
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