PCauthorities.com presents…
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
SAVER - Extension Details
Date Added: September 10, 2008
File Extension:  .SAVER
Description 1: .SAVER is a file extension associated with the Macintosh OS X screensaver that runs on a computer whenever it has been idle for a specified length of time. The screensaver can either come included in the Mac system or be created by thirdparty developers. Apple screensaver files are usually stored under the /System/Library/Screen Savers directory. Thirdparty screensavers the user installs get saved in the ~/Library/Screen Savers folder. Customize screensaver settings by going to System Preferences and choosing the "Desktop & Screen Saver Preference Pane.
File Type:   System file
Mode: Binary
Program(s) to Open:  Macintosh: Apple Screen Saver (included with Mac OS X)
Common:
Extension: