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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
JSP - Extension Details
Date Added: May 10, 2008
File Extension:  .JSP
Description 1: .JSP file extension is linked with Java Server Page a servergenerated HTML internet web page which uses Java codes. JSP codes are parsed by a web server before they are sent to the users PC. In reality, the end user only sees the HTML that has been generated by Java codes and not the .JSP codes. These codes/files can be edited through a web development software or basic text editor. .JSP file extension and Java are owned and developed by Sun Microsystems.
File Type:   Document File
Mode: Binary
Program(s) to Open:  Windows: Web browser such as Internet Explorer or Firefox; Mac: Web browser such as Firefox or Safari
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