How to open PEF file extension?

The author of advice: Mr Brankiewicz

PEF files are incessantly popular. However, a file name containing PEF file extension is problematic for some of the users. They have problems with correct opening of a file with PEF extension. However, it should be remembered that PEF file extension can match one or more types of files. The most popular is Pentax Digital Camera Raw Image Format but if there are others, you will find information concerning them below.

So, it is worth looking close at the problem concerning PEF files and search for its solution.

A list of programs supporting files types with PEF extension can be found below. Applications are sorted according to appropriate operational systems and their popularity.

  • Pentax Digital Camera Raw Image Format

    .pef file extension

    Category: Graphic Files

    OS Software
    Windows Pentax Photo Browser or Photo Laboratory Pentax Photo Browser or Photo Laboratory
    ACD Systems Canvas 12 ACD Systems Canvas 12
    ACDSee Photo Manager 12 ACDSee Photo Manager 12
    Adobe Photoshop CS5 Adobe Photoshop CS5
    Adobe Photoshop Elements 9 Adobe Photoshop Elements 9
    Google Picasa Google Picasa
    MAGIX Xara Photo & Graphic Designer 6 MAGIX Xara Photo & Graphic Designer 6
    UFRaw UFRaw
    MAC OS Pentax Photo Browser or Photo Laboratory Pentax Photo Browser or Photo Laboratory
    Adobe Photoshop CS5 Adobe Photoshop CS5
    Adobe Photoshop Elements 9 Adobe Photoshop Elements 9
    UFRaw UFRaw
    Google Picasa Google Picasa
    Linux Google Picasa Google Picasa
    UFRaw (Unidentified Flying Raw) UFRaw (Unidentified Flying Raw)
    GIMP with UFRaw plugin GIMP with UFRaw plugin

How to check if a file we want to open is not infected by malware or viruses?

  • Download Malware/viruses removal tool from PEF files in the Windows system.
  • Click “Start scanning” and wait until the programme performs the scanning process on your computer.

What are the reasons of errors concerning PEF extension of files?

The problem that often causes damage concerning PEF extension are Windows system registry errors. That is why, in the first place it is recommended to:

  • Scan computer in order to identify, repair and open the PEF file
  • Check system registry from the angle of hidden errors
  • Repair file’s associations with programs in the system registry

If you are not sure if the above problems concern you, you should consider other frequent irregularities:

  • You do not have an appropriate application installed that supports PEF file extension
  • PEF file is corrupted
  • The application’s version necessary to open the file is not correct
  • The file is not assigned to an appropriate program

Solving problems with PEF files


If PEF file does not open, firstly, it is worth using files associations built in the Windows system with application that can support them. In order to do it, you should double-click a PEF file icon. A list of programs that probably support such a file will appear. It is enough to choose one of them so that Windows would open a given extension with it. Incorrect file’s association will result in Windows trying to open PEF file with a wrong program all the time even if there is an appropriate application supporting this format on a drive. In this case, it is necessary to perform the above mentioned registry scanning and associations’ repair.

If associations are correct and Windows still cannot open the file, most probably the computer does not have appropriate software supporting files with name containing PEF in their extension. The solution to this problem is very simple. You should buy or download a free (if they exist) application that will allow you to open, browse and edit PEF format (You can also try to find more informations on FileInfo). It is no risk because many paid programs have free test versions enabling to check their functionality.

Do you have extra information about a PEF file? [ Add information about a PEF file ]

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