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Basic information about AS3PROJ file

When there is a problem with opening files with the file extension AS3PROJ（*.AS3PROJ or *.as3proj）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the AS3PROJ file yourself.

There are 1 file types using the AS3PROJ file extension in our database. In the further part of this page, you will find detail information about all the AS3PROJ file with their brief description and a list of programs that support AS3PROJ file sorted by operating systems. The table below provides useful information about the AS3PROJ file extension. It answers questions such as:
  • What is the AS3PROJ file?
  • How to open a AS3PROJ file?
  • What programs do I need to open a AS3PROJ file?
  • What programs help to create and edit a AS3PROJ file?
  • How to convert AS3PROJ files to another file format?
  • How to convert another files to AS3PROJ file format?


1.Detail information about AS3PROJ file extension: FlashDevelop ActionScript 3 Project File

File type FlashDevelop ActionScript 3 Project File Category Developer Files
Developer FlashDevelop File format XML
Description AS3PROJ file is a FlashDevelop ActionScript 3 Project File developed by FlashDevelop. Project file created by FlashDevelop, a free source code development software often used for Flash and Web programming; saved using XML formatting and contains project information such as included source code files, build settings, and output .SWF options.
Software programs that will open, edit or convert AS3PROJ files

Windows		 FlashDevelop

macOS		 FlashDevelop

Linux		 FlashDevelop



Can't open a AS3PROJ file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.AS3PROJ”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the AS3PROJ extension without any issue.


Where I can download the application that support AS3PROJ file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of AS3PROJ files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a AS3PROJ file?

The reasons for the lack of the ability to open a AS3PROJ file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a AS3PROJ file. If there is still something wrong, you might want to check:

  • Whether the AS3PROJ file is damaged.
  • Whether the AS3PROJ file is incorrectly linked in the registry entries.
  • Whether the AS3PROJ file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the AS3PROJ file format is incompletely.
  • Whether the AS3PROJ file is infected.
  • Whether the drivers of the equipment used for opening a AS3PROJ file are up to date.
  • Whether your computer has enough hardware resources to open a AS3PROJ file.

If the AS3PROJ file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.