PKM File

What are PKM files and how to open them

Are you having problems opening a PKM file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your PKM files.

What is a PKM file?

PKM files have multiple uses, and GrafX2 Bitmap is one of them. Read more about the other uses further down the page.

GrafX2 Bitmap

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 PKM files

Important: Different programs may use files with the PKM file extension for different purposes, so unless you are sure which format your PKM file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: August 10, 2026

All known file formats using extension .PKM

While GrafX2 Bitmap is a popular type of PKM-file, we know of 2 different uses of the .PKM file extension. Different software may use files with the same extension for different types of data.

PockEmul Session

PockEmul Session files are used by PockEmul, an emulator for vintage pocket computers and scientific calculators. Each session file saves the current state of one or more virtual devices - what models are running, their settings, the contents of their memories, registers, and temporary data - so you can stop and later resume exactly where you left off.

These files are created by PockEmul when you use its "Save Session" or equivalent feature. They store the emulator's in-progress configuration and internal state, including any loaded programs or data. When you later load the session file in PockEmul, it restores all those aspects so your virtual machines continue without needing to manually re-open or re-configure anything.

A technical detail helpful for identifying such files: they normally begin with the ASCII header <session version="2.0" model="… at offset zero, and include identifiers like "SESSION VERSION", "MODEL", "BANK TYPE", "DATAHEX", "MEMORY", "LABEL", "TRUE", "FALSE", and "EMPTY" elsewhere in the file text.

PKM opener for Windows

We have identified one PKM opener that is compatible with this specific type of PKM file.

Help us help others

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