AXD File Extension

AXD file icon

ASP.NET Web Handler Format

What is a AXD file?

The AXD file extension is linked to ASP.NET Web Handler Format and belongs to the Developer Files category, which includes 1166 files.

The ASP.NET Web Handler Format (AXD), created by Microsoft, is one of file format they developed, and they also built 242 programs to support them.

AXD files are compatible with various operating systems, including Mac OS, Windows and Linux. When working with AXD files, you can rely on 6 programs, including Microsoft Visual Studio, Atom and Sublime Text.

How to open a AXD file?

If you can’t open a AXD file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

Microsoft Visual Studio, Atom and Sublime Text are recognized as the most popular software solutions for dealing with AXD files. If you wish to install the latest release of Sublime Text, visit the official Sublime HQ Pty portal and download the edition that works on any operating system.

After installation, your operating system should automatically open AXD files with Sublime Text.

Make Sublime Text the default AXD viewer

Setting a default program by file type in Windows

  1. Right-click on your AXD file, then choose the "Open with" option and select "Choose another application" from the available options;
  2. Inside the popup window, scroll through the list of applications and specifically choose Sublime Text as the application to associate with your AXD file;
  3. Check the "Always use this app" checkbox and click "OK".

Change the default app to open files on Mac

  1. Right click or use Control + Left Click on the desired AXD file to access a dropdown menu of actions;
  2. Select "Open in application" and click "Other";
  3. Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
  4. In this menu, select "All Programs", then find Sublime Text and check the box next to "Always open in the application."

How to edit a AXD file?

Editing AXD files requires installing professional software that lets you open and edit developer files. Online editors have more limitations compared to dedicated ASP.NET Web Handler Format programs.

Best AXD editors in 2026

Based on these criteria, we have prepared a list of available AXD editors.

AXD Editor SoftwareDeveloperPlatformsOverall Rating
Notepad++Notepad++ TeamWindows4.9 out of 5 (42 reviews)
Sublime TextSublime HQ PtyWindows, Mac OS, Linux4.9 out of 5 (44 reviews)
Microsoft Visual StudioMicrosoftWindows, Mac OS, Linux4.7 out of 5 (40 reviews)
Atom-Windows, Mac OS, Linux4.5 out of 5 (41 review)
PSPadJan FialaWindows4.2 out of 5 (45 reviews)

Finding answers to AXD file problems

There are some common issues with AXD files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.

What are the possible solutions to recover a corrupt AXD file?

Use a data recovery program to open the damaged AXD file and from the menu choose "Repair" function to start the repair process. Then wait for the recovery process to complete, which allows you to automatically repair corrupted developer files.

What are the warning signs that my AXD file may be corrupted?

Corrupted AXD developer files may show the following signs:

  • Error messages appear during the course of working with the file;
  • Editing the archive in Microsoft Visual Studio is accompanied by slow performance or delays;
  • The file does not open or opens with errors;
  • Unexplained increase in AXD file size;
  • File hangs or crashes in Sublime Text or other programs;

What are the possible causes of Sublime Text crashing?

Sublime Text crashes can be caused by outdated software. Keep your Sublime HQ Pty products up to date by installing the latest updates.

A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.