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
CAB - Extension Details
Date Added: January 01, 1970
File Extension:  .CAB
Description 1: .CAB file extension is linked with Microsoft Flight Simulator 2004 Game Archive. This is the file extension utilized by the archive format of Microsoft Simulator 2004 an awardwinning game franchise that celebrates 20 years of development and perfecting. It offers players the experience and controls of some of the most famous historic aircrafts. The game features interactive multimedia, insightful articles, detailed visual effects and many more. .CAB file extension and Flight Simulator 2004 are owned and developed by Microsoft Corp.
Description 2: .CAB file extension is linked with Windows Cabinet Compressed Archive which supports digital signing and compression. It is also used in various Microsoft installation engines such as: Device Installer, Setup API, Windows Installer and AdvPack [for ActiveX components]. There are three compression methods offered by CAB: DEFLATE or .ZIP by Phil Katz, Quantum by David Stafford, and LZX by Jonathan Forbes & Tomi Poutanen. .CAB file extension is also utilized by other installers such as InstallShield, but in a different format.
File Type:   Archive/ compressed file
Mode: Binary
Program(s) to Open:  Windows: Add/Remove Software Control Panel, Smith Micro Stuffit Deluxe for Windows, msconfig; Mac: Smith Micro Stuffit Expander for Mac
Common:
Extension: