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Basic information about QPF file

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

There are 3 file types using the QPF file extension in our database. In the further part of this page, you will find detail information about all the QPF file with their brief description and a list of programs that support QPF file sorted by operating systems. The table below provides useful information about the QPF file extension. It answers questions such as:
  • What is the QPF file?
  • How to open a QPF file?
  • What programs do I need to open a QPF file?
  • What programs help to create and edit a QPF file?
  • How to convert QPF files to another file format?
  • How to convert another files to QPF file format?


1.Detail information about QPF file extension: Quest3D Project

File type Quest3D Project Category Data Files
Developer Act-3D File format N/A
Description QPF file is a Quest3D Project developed by Act-3D. Project created with Quest3D, a 3D development program used for creating 3D games, simulations, and training software; contains project data and workspace settings; can be viewed with the free Quest3D Viewer.
Software programs that will open, edit or convert QPF files

Windows		 Act-3D Quest3D
Act-3D Quest3D Viewer


2.Detail information about QPF file extension: Quartus II Project File

File type Quartus II Project File Category Data Files
Developer Altera File format N/A
Description QPF file is a Quartus II Project File developed by Altera.
Software programs that will open, edit or convert QPF files

Windows		 Altera Quartus II

Linux		 Altera Quartus II


3.Detail information about QPF file extension: QuickPad Encrypted Document

File type QuickPad Encrypted Document Category Text Files
Developer Klumbu File format Text
Description QPF file is a QuickPad Encrypted Document developed by Klumbu.
Software programs that will open, edit or convert QPF files

Windows		 Klumbu QuickPad



Can't open a QPF 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.QPF”。

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 QPF extension without any issue.


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

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

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

If the QPF 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.