ASPX files are not common, but you will encounter them if you download the application source code, you may find one or two APSX files there. The file type may be unusual for most end users, but opening this type of file is not difficult.

ASPX file

ASPX file created by the ASP.Net server. It’s basically a web page, but instead of using HTML. It is processed and translated into HTML when a website reads or downloads a file in a modern browser.

As for the opening of ASPX file, you will find that this is quite easy to do. You don’t have to set up a server or install complex applications to get the job done.

1. Open the ASPX Files browser

The ASPX file is mainly a document. The only reason you can’t open it is its extension. Unlike an HTML file that you can open with a text editor, you need a PDF viewer to open your ASPX files.

  1. Open File management.
  2. Mene View tab.
  3. Activate Show Extensions option.
  4. Go to ASPX and select it.
  5. press F2 key.
  6. Change ASPX to PDF.
  7. Confirm that you want to change the format.
  8. Right – click the file and open it in a modern browser like Chrome.

2. Use web development tools

If converting an ASPX file to PDF and opening it in a browser makes the file look poor, you can use a web development tool instead. You can use many web development tools, but if you are looking for a free tool that is easy to install and configure, we recommend using Notepad ++.

  1. Charge and install Notepad ++.
  2. Open File Explorer and browse to the ASPX file.
  3. Right – click the file and select Open from the shortcut menu.
  4. Select Notepad ++ to open the file.
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3. Online web development tools

Web applications allow you to open ASPX files in your browser. You do not need to convert them to PDF. Instead, the web application can read the APSX file as is. You do not need to install any other applications as long as you have a modern browser such as Chrome or Firefox installed on your system.

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There are custom ASPX file viewers, but these are not the most impressive web applications you can find. Try to use File Pro Info ASPX Viewer to open the ASPX file in your browser.


If you have Microsoft Visual Studio installed, this is the best application for viewing an ASPX file. Of course, Visual Studio also installs a lot more on your system to help you with development. If you are not a developer, installing Visual Studio to view an ASPX file is too much. Instead, try one of the options listed for a much simpler approach.

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