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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
ICA - Extension Details
Date Added: February 09, 2008
File Extension:  .ICA
Description 1: .ICA file extension is liked with Citrix Image Object Content Architecture File. This file extension is usually a general bitmap graphics image that can be opened by various graphics programs. ICA file format was developed by Citrix for storing data links between clients and servers. .ICA file extension is also associated with XenApp from Citrix.
File Type:   Bitmap image file
Mode: Binary
Program(s) to Open:  Windows: Graphics Converter Pro, XnView; Mac: XnView
Common:
Extension: