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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
RP2 - Extension Details
Date Added: February 11, 2008
File Extension:  .RP2
Description 1: A file with the .RP2 extension refers to a compressed file archive containing program data as well as related media for a particular game or other applications. Use RP2 files to archive programs for retro platforms like Commodore and Amiga systems. Manual configuration is not required to open and play RP2 files.
File Type:   Game file
Mode: Binary
Program(s) to Open:  Mac, Windows and Unix: Cloanto Amiga Forever
Common:
Extension: