>> A4P file

A4P file format description

Many people share .a4p files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .a4p file can be edited, converted or printed with. On this page, we try to provide assistance for handling .a4p files.

1 filename extension(s) found in our database.

.a4p - Macromedia Authorware Source

The A4P development files are related to Adobe Authorware. A4P file is a Macromedia Authorware Source. Authorware is a visual authoring tool for creating rich-media e-learning applications for delivery on corporate networks, CD/DVD, and the Web.

Adobe Authorware
Development files
- / -
a5p, a6p, a7p
Macromedia Authorware Source related extensions:
ActionScript Object
Flash JavaScript
Adobe AIR Native Extension
Adobe Flash ActionScript
Shockwave Flash Source File
Shockwave Flash Component File

Naturally, other applications may also use the .a4p file extension. Even harmful programs can create .a4p files. Be especially cautious with .a4p files coming from an unknown source!

Can't open a .a4p file?

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

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .a4p file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

atp, arp, a4l, ap4, aep, ap

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Visual Studio ACT Project
Alphacam Lathe Post Data
Alphacam Router Post Data
Macromedia Authorware Library
Adobe After Effects Project
Alphacam Wire EDM Post Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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