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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
Q5R - Extension Details
Date Added: December 10, 2008
File Extension:  .Q5R
Description 1: Flaming Pear Software is the one behind the photoshop plugin associated with the .Q5R extension. With this Melancholytron Photoshop plugin, users can adjust focus and hue to make a bunch of pictures nostalgic, sad and moody. For it to run properly, this plugin has to reside in the Plugins folder, located within the application folder.
File Type:   Plugin file
Mode: ASCII
Program(s) to Open:  Windows: Corel Paint Shop Pro or Adobe Photoshop Macintosh: Adobe Photoshop
Common:
Extension: