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.ASPX File Extension

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File TypeActive Server Page Extended File

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CategoryWeb Files


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Server-generated Web page that may contain VBScript or C# code; often written with Microsoft Visual Web Developer and designed for the Microsoft ASP.NET framework; scripts within the page are processed on the Web server and the resulting HTML is sent to the user's Web browser.

More Information

ASPX pages are also called ".NET Web forms." They can be identified in a Web browser when the URL in the address field ends in ".aspx".

Common ASPX Filenames:

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

Program(s) that open .ASPX files
Microsoft Windows LogoWindows
Microsoft Visual Web Developer
Microsoft Visual Studio 2013
ES-Computing EditPlus
Any Web browser
Mac OS X LogoMac
Any Web browser
Linux LogoLinux
Any Web browser
Updated 12/5/2014