Basic information about ALT3 file

When there is a problem with opening files with the file extension ALT3（*.ALT3 or *.alt3）, 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 ALT3 file yourself.

There are 1 file types using the ALT3 file extension in our database. In the further part of this page, you will find detail information about all the ALT3 file with their brief description and a list of programs that support ALT3 file sorted by operating systems. The table below provides useful information about the ALT3 file extension. It answers questions such as:
  • What is the ALT3 file?
  • How to open a ALT3 file?
  • What programs do I need to open a ALT3 file?
  • What programs help to create and edit a ALT3 file?
  • How to convert ALT3 files to another file format?
  • How to convert another files to ALT3 file format?


1.Detail information about ALT3 file extension: Adobe PageMaker Template

File type Adobe PageMaker Template Category Page Layout Files
Developer Adobe Systems Incorporated File format N/A
Description ALT3 file is a Adobe PageMaker Template developed by Adobe Systems Incorporated. ALT3 is a file extension commonly associated with Adobe PageMaker Template files. Adobe PageMaker Template format was developed by Adobe Systems Incorporated. ALT3 files are supported by software applications available for devices running Mac OS. Files with ALT3 extension are categorized as Document Files files. The Document Files subset comprises 574 various file formats. Adobe PageMaker is by far the most used program for working with ALT3 files. Adobe PageMaker software was developed by Adobe Systems Incorporated, and on its official website you may find more information about ALT3 files or the Adobe PageMaker software program.
Software programs that will open, edit or convert ALT3 files

macOS		 Adobe Pagemaker



Can't open a ALT3 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.ALT3”。

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 ALT3 extension without any issue.


Where I can download the application that support ALT3 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 ALT3 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 ALT3 file?

The reasons for the lack of the ability to open a ALT3 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 ALT3 file. If there is still something wrong, you might want to check:

  • Whether the ALT3 file is damaged.
  • Whether the ALT3 file is incorrectly linked in the registry entries.
  • Whether the ALT3 file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the ALT3 file format is incompletely.
  • Whether the ALT3 file is infected.
  • Whether the drivers of the equipment used for opening a ALT3 file are up to date.
  • Whether your computer has enough hardware resources to open a ALT3 file.

If the ALT3 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.