AS File Extension

Programs that support AS files

• Windows ⁶
• Mac OS ⁵
• Linux ²

Windows

• Adobe Flash
• Adobe Dreamweaver
• Adobe Flash Builder
• Sublime Text
• Adobe Creative Cloud
• Adobe Creative Suite

Mac OS

• Adobe Flash
• Sublime Text
• Adobe Flash Builder
• Adobe Creative Cloud
• Adobe Creative Suite

Linux

• Sublime Text
• Adobe Creative Cloud

How to open a AS file?

If you are having trouble opening a AS 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.

The most popular programs for working with AS files are Adobe Flash, Sublime Text and Adobe Dreamweaver. To install the current version of Adobe Flash, go directly to the official Adobe website. The universal package for all operating systems is available there.

After setup, the operating system should recognize AS files and link them with Adobe Flash.

Setting Adobe Flash as default AS viewer

Changing the default program in Windows

1. Right-click on your AS file and choose the "Open With" option. Then click "Choose another app" to continue the process;
2. Choose Adobe Flash from the available applications listed in the pop-up window to set it as the default application to open your AS file;
3. Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.

Change the default app for a file type in Mac

1. Initiate a right click or use Control + left click on the desired AS file to open a menu where you can select various actions;
2. Select "Open in application" and click "Other";
3. Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
4. Choose "All Programs" within this menu and locate Adobe Flash. Check the box next to "Always open in app" to set it as the default program.

Convert to and from AS

Please note that after converting a AS file, some functionality may differ from the original. However, in many cases, it can be converted back to its original format.

Converting Files to AS Format

• JT to AS
• VP6 to AS
• PSD to AS
• CSV to AS
• SWT to AS
• PAR to AS

Tips and tricks to solve problems with AS files

AS files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.

How to edit a AS file?

To edit AS files, you need to install specialized software that allows you not only to open but also to modify developer files. Online AS editors usually provide fewer features than software created specifically for ActionScript Format.

Best AS editors in 2026

Based on your described criteria, here is a list of available AS editors.