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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
ORF - Extension Details
Date Added: January 01, 1970
File Extension:  .ORF
Description 1: The .ORF extension stands for Olympus RAW File. It refers to unprocessed RAW photos taken with Olympus digital cameras. Settings like white balance as well as exposure allow for modification by the user after the pictures are taken. Keep in mind that it is possible for different Olympus cameras to produce .ORF files that bear dissimilar formatting.
File Type:   Image file
Mode: Binary
Program(s) to Open:  Windows: ACDSee Photo Manager, Adobe Photoshop CS, ORF Suite Macintosh: Adobe Photoshop CS, Apple Aperture
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