PEF File

What are PEF files and how to open them

Are you having problems opening a PEF file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a PEF file?

PEF files have multiple uses, and Pentax Raw Image is one of them. Read more about the others further down the page.

Pentax Raw Image

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open PEF files

We have identified 4 PEF openers that are compatible with this specific type of PEF file.

Programs that open Pentax Raw Image files

Last updated: November 9, 2022

More file formats using the PEF extension

Through our research of PEF files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Portable Embosser Format

Various apps that use files with this extension

These apps are known to open certain types of PEF files. Remember, different programs may use PEF files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Adobe PhotoshopAdobe PhotoshopUser submitted
Photo GalleryPhoto GalleryUser submitted
Picasa Photo ViewerPicasa Photo ViewerUser submitted
PhotoPad Image EditorPhotoPad Image EditorUser submitted
HoneyviewHoneyviewUser submitted
Corel PaintShop ProCorel PaintShop ProUser submitted
Ashampoo Photo CommanderAshampoo Photo CommanderUser submitted
FastStone Image ViewerFastStone Image ViewerUser submitted
PENTAX Digital Camera UtilityPENTAX Digital Camera UtilityUser submitted
Zoner Photo StudioZoner Photo StudioUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about PEF file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.