File Extension APF

  • Full name
    Adobe Acrobat Profile Format
  • Developer
    Adobe Systems
  • Popularity
Have you encountered a problem with a APF file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a APF file here. In the further part of this page we have added a list of programs that should open your APF file. It is enough you choose a proper application for your operating system, download and install it.


The file extension APF is used by older versions of the Adobe Acrobat document file software. These files are used to add a digital signature to a PDF document. In this way, it can be determined later, for example, who has made which change to the document.

These profiles or certificates can be loaded under the security setting under 'Edit -> Protection' and are usually password protected. Also with the Acrobat Reader such files can be attached, for example for the writing of comments in pdf documents.

Newer versions of Acrobat use a different format for these profile files with the extension pfx or P12 (MacOS).

Programs which can open a APF file

How to open a APF file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the APF file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a APF file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support APF files. At this point we are looking for disk space where the application was installed in and we can link it with a APF file. Since then, our operating system will use the selected program to support all APF files.

Other issues

Despite the described problem with APF there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the APF file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the APF file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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