The File Extensions Database


.ASP File Extension

  • Developer by: Microsoft
  • Category: Web Files
  • Format: Text

What is an .ASP file?

.ASP is Active Server Page

An ASP file is a webpage created by a web developer that resides on a web server and may contain scripts written in VBScript or JavaScript. It is parsed on the server, which generates HTML that is sent to the client's browser. ASP files are commonly used by ASP.NET sites and websites hosted on Windows servers running Microsoft IIS.

ASP files are similar to .HTML files but are used a little differently. When a web browser requests an HTML file, the server just sends the file. However, when a web browser requests an ASP file, the server sends the request through the ASP engine, which parses the ASP file and generates plain HTML that is sent to the client's browser. Since ASP pages are processed on the server, website visitors do not see the actual ASP code, just the HTML generated from the scripts within the page. ASP pages typically use the ".asp" extension rather than ".html."

Since the release of ASP 1.0 in 1996, there have only been two other versions, ASP 2.0 in 1997 and ASP 3.0 in 2000. In 2002, Microsoft released ASP.NET, which superseded ASP. Now ASP is commonly referred to as Classic ASP or ASP Classic. Because of the wide implementation of the ASP.NET framework, ASP pages have largely been replaced by .ASPX pages. Some advantages of ASP.NET over ASP is the use of more languages such as C#, VB.NET, J#, and Delphi.NET, as well as improved performance with compiled code, more advanced debugging, and better run-time error handling.

Common ASP Filenames

Default.asp - The default webpage loaded when a client browser requests a Web server directory on a Microsoft IIS-based server. For example, when a client requests http://www.sampledomain.com/, the server loads http://www.sampledomain.com/Default.asp, unless it is configured to load a different file.

Programs that open Active Server Page
Windows
File Viewer Plus
Any text editor
Microsoft IIS
Adobe Dreamweaver CC 2019
Adobe Fireworks
Microsoft Visual Studio 2017
Microsoft Visual Web Developer
ES-Computing EditPlus
Mac
Any text editor
Adobe Dreamweaver CC 2019
Adobe Fireworks
File Type 2 Adobe Color Separation Setup File
Developer by: Adobe Systems Category: Settings Files

Contains color separation options that can be loaded by Adobe programs such as Photoshop; used for defining preferences for color separations when you print, export to PDF, or export your document to another program; includes ink color types, separation type, and ink limit; referenced for images using color modes such as RGB and CMYK; similar to the .AST Adobe file extension.

Programs that open Adobe Color Separation Setup File
Windows
Adobe Photoshop CC 2019
Adobe Illustrator CC 2019
Adobe Acrobat DC
Mac
Adobe Photoshop CC 2019
Adobe Illustrator CC 2019
Adobe Acrobat DC

How to solve problems with ASP files

  • Associate the ASP file extension with the correct application. On :
    Windows: Right click on any ASP file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ASP files". Mac: Right click (or Ctrl-click) the ASP file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ASP is Active Server Page. Because only the current version supports the latest ASP file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .ASP is Active Server Page update.
  • To make sure that your ASP file is not corrupted or virus-infected, get the file again and scan it with antivirus software.