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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:
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ASP - Extension Details
Date Added: January 01, 1970
File Extension:  .ASP
Description 1: .ASP file extension is linked with Photoshop Photo File Index. This is the file extension for the index file utilized by Adobe Photoshop the leader of Photoshop digital imaging line and the professional imageediting standard. It provides superb creative tools that help users achieve extraordinary outcomes. It has exceptional adaptability that allows users to customfit the program according to their preferences. It also offers more efficient processing, filehandling and editing.
Description 2: .ASP file extension is linked with Alphacam Stone Post File. This is the file extension for the stone post file utilized by Alphacam a fullfeatured CAD/CAM solution which is compatible with any CNC machine. This application is used in manufacturing various types of components [i.e. single routed parts to the more complex 5axis furniture components]. Its main goal is to provide customers with flexibility, productivity and reliability. Alphacam is owned and developed by Planit Solutions Inc.
Description 3: .ASP file extension is linked with EROSION 3D Aspect File. This is the file extension for the aspect file utilized by EROSION 3D a soil erosion simulation program that provides users with the following key features: physicallybased soil erosion model; offers temporal resolution of 115 minutes for description of events; gridbased distributed catchments model for small watersheds that have high spatial resolution; relief parameters are generated in a semiautomatic fashion and are based on Digital Elevation Model [DEM]; provides interfaces for Geographical Information Systems such as Arc/Info, Grass, Idrisi.
Description 4: .ASP file extension is linked with Photoshop Separation Setup. This is the file extension for the separation setup utilized by Adobe Photoshop the leader of Photoshop digital imaging line and the professional imageediting standard. It provides superb creative tools that help users achieve extraordinary outcomes. It has exceptional adaptability that allows users to customfit the program according to their preferences. It also offers more efficient processing, filehandling and editing.
Description 5: .ASP file extension is linked with Procomm Plus ASPect Language Script File. This is an old script file utilized by Procomm Plus a shareware application during the early preweb days. This application allows users to dial into BBS, telnet and many others. Procomm Plus is also a terminal emulator that offers support for 3 dozen terminals. It has fax applet, email program, Usenet news reader and FTP ability. .ASP file extension and Procomm Plus are owned and developed by Symantec Corp.
Description 6: .ASP file extension is linked with Active Server Page. This is the servergenerated webpage that is based on ActiveX scripting. The web server processes the ASP code which then results to HTML code. The HTML is sent to the users browser. .ASP file extension is utilized by web pages with URLs that end with ".asp.
File Type:   Source Code & Script
Mode: ASCII
Program(s) to Open:  Windows & Mac: any web browser
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