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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
RIF - Extension Details
Date Added: January 01, 1970
File Extension:  .RIF
Description 1: Raster Image files bear the .RIF file extension. RIF files feature 2, 3 and 4bit ADPCM mono sound format, and have a frequency of 7200 Hz. The MetaCreations Painter graphics software program, known today as Corel Painter, uses this image format. With these files, paintings stay separate from the canvas. This is so users can still make changes to the canvas later, should they wish to do so.
File Type:   Image file
Mode: Binary
Program(s) to Open:  Mac and Windows: Corel Painter
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