What is an .aspx File and How to Open It

What is an.aspx File and How to Open It

Here we can see, “What is an .aspx File and How to Open It”

  • The ASP.NET server-side web application framework from Microsoft uses ASPX files.
  • This tutorial looks at opening and editing ASPX files in Windows and Mac.

A file extension explicitly created for the Microsoft ASP.NET framework is called Active Server Page Extended (ASPX).

The ASPX files, which often contain scripts and programs, are produced by web browsers. Your web browser uses the codes and scripts to determine how to display the website.

Likely, you don’t know what tool to use to open the ASPX file if you didn’t intend to download it.

In this post, we’ll look at a few tools that might make it simple for you to open and view an ASPX file.

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How do I open a .aspx file in Windows 10 and Mac?

1. Change the file extension

Consider renaming the file if a website supplied an ASPX file instead of the PDF or image file you wanted to download. If a PDF was what you were anticipating, rename the file to file.pdf or file.png if it was an image.

This problem typically arises when the website incorrectly names the created file, resulting in a server-side file.

If the problem still exists, try using a different browser to access the same website to check if the problem is browser-specific.

2. Open .aspx files with a third-party program

Use Adobe Dreamweaver

Like other Adobe products, the prominent web creation tool Adobe Dreamweaver is a commercial program. However, you can use it to open the ASPX files if you already have them installed.

With its support for HTML, CSS, JavaScript, and other languages, Dreamweaver enables you to develop and publish web pages virtually anywhere swiftly.

A clever, streamlined code engine can be used to design, write, and administer dynamic websites. Thanks to the code tip, you can easily learn and modify HTML, CSS, and other web standards.

Use Visual Studio

Free IDEs like Microsoft Visual Studio can be used to work with the downloaded ASPX file. You can open and edit ASPX files with the tool on both Windows and Mac computers.

A fully functional IDE, Visual Studio provides the whole toolkit from basic design to deployment. It has the IntelliSense code suggestion technology for increased accuracy and productivity.

Open ASPX file using Notepad++

You should use Notepad++ if you need to make simple changes. Advanced capabilities and support for CGI format are available in Notepad++.

Because it is written in C++ and is based on the robust editing component Scintilla, Notepad++ has a faster execution rate and less program size.

The Microsoft ASP.Net server-side web application framework uses ASPX files. You can open and modify files with an ASPX extension using the tools described in the article mentioned above.


I hope you found this guide useful. If you’ve got any questions or comments, don’t hesitate to use the shape below.

User Questions

1. What application opens.aspx files?

The widely known web building tool Adobe Dreamweaver may be used to open ASPX files. It enables users to rapidly and virtually from anywhere build and publish web pages using HTML, CSS, Javascript, and more.

2. How do I use my computer to open an ASPX file?

Any browser, including Firefox, Chrome, and Edge, is acceptable. You must select Chrome from the Open with the menu when you right-click on the.aspx file (your browser). If you can’t find the browser you want, click Choose another software and look it up in the Program file.

3. Why won’t an ASPX file open?

Because Windows does not support the ASPX extension, you cannot open files with the.aspx extension. The only method to open this file is to convert it to a different extension that Windows can open. Normally, files with the ASPX extension are converted to PDF format.

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