ASPX File Extension
Active Server Page Extended Format
- File Type aspx
- Developer Microsoft
- Popularity
- Application Adobe Dreamweaver
- Category Web Files, Developer Files
- Format Text
What is a ASPX file?
The ASPX extension is used by Active Server Page Extended Format and falls under the categories of Web Files and Developer Files, covering 1449 files.
Microsoft, the developer of the Active Server Page Extended Format (ASPX), has released file format and 242 programs designed to handle them.
ASPX file support extends to various operating systems, including Mac OS, Linux and Windows. There are 17 programs available to open a ASPX file, including popular tools like Microsoft Visual Studio, Adobe Dreamweaver and GNU Emacs.
Programs that support ASPX files
Windows
Mac OS
How to open a ASPX file?
If you are having trouble opening a ASPX file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.
When it comes to opening and working with ASPX files, Microsoft Visual Studio, Adobe Dreamweaver and GNU Emacs are the top choices for users. If you need the newest version of Adobe Dreamweaver, just access the Adobe website. From there you can download the installer compatible with all systems.
Following installation, ASPX files should be automatically opened with Adobe Dreamweaver.
Set Adobe Dreamweaver to open ASPX by default
Changing Default Programs in Windows
- Right-click on your ASPX file and choose the "Open With" option. Then click "Choose another app" to continue the process;
- Find the Adobe Dreamweaver application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening ASPX files.
Change default apps on Mac
- Right-click or use Control + Left-click on the desired ASPX file to access the file’s context menu;
- Select "Open in application" and click "Other";
- Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
- Within this menu select "All Programs" and navigate to Adobe Dreamweaver. Check the box next to "Always open in app" to make sure it’s the default option.
How to edit a ASPX file?
To edit ASPX files, it is essential to install software that supports not only viewing but also editing the web files. Online ASPX editors provide limited functionality compared to full-featured software for Active Server Page Extended Format.
List of Top ASPX editors 2026
Taking into account the provided details, we have prepared a list of ASPX editors that match your needs.
| ASPX Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| WebsitePainter | Ambiera | Mac OS | 4.9 out of 5 (41 review) |
| Notepad++ | Notepad++ Team | Windows | 4.8 out of 5 (43 reviews) |
| Microsoft Visual Studio | Microsoft | Windows, Mac OS, Linux | 4.7 out of 5 (40 reviews) |
| Adobe Dreamweaver | Adobe | Windows, Mac OS | 4.6 out of 5 (44 reviews) |
| Coda | Panic | Mac OS | 4.6 out of 5 (45 reviews) |
| Gedit | GNOME | Linux | 4.2 out of 5 (42 reviews) |
| GNU Emacs | FSF | Linux | 4.2 out of 5 (39 reviews) |
Easy ASPX Troubleshooting
When issues arise with ASPX files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.
What can lead to sudden Adobe Dreamweaver crashes?
The absence of software updates can cause Adobe Dreamweaver to crash. It is recommended to install the latest available updates for Adobe products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.
What is the recommended approach to repair a damaged ASPX file?
Start a data recovery program and open the damaged ASPX file. Go to the menu and select the "Repair" option to repair the file. Wait for the recovery process to finish, as it will automatically repair damaged web files.
Are there any symptoms that my ASPX file is damaged?
Common indications of damaged ASPX web files are:
- Opening or processing the file in Adobe Dreamweaver or other programs causes instability or crashes in the program;
- Error dialogs are displayed when interacting with the file;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the ASPX file;
- Editing the archive in Microsoft Visual Studio results in slow or unresponsive behavior;