.JMF File Extension

Chain Studios
File Type:
Jackhammer Project

Having trouble opening .jmf extension? Don't panic! This page explains what jmf files are as well as suggests programs you may use to open jmf files. You can download these programs through this page.

What is a JMF file?

Jmf file extension has Jackhammer Project file type, developed by Chain Studios, which is associated with the "game files" category.

Jackhammer is a tool for creating maps and designing levels for games that have Quake-like BSP architecture. It saves its projects in files with the JMF extension. They usually contain a whole game level and all related data including map sources. New maps created in Jackhammer are saved with the JMF extension by default, but you can use the .RMF format for exporting your maps to the Valve Hammer Editor.   

To learn how you can open the given file, read the information below.

jmf file icon
Chain Studios
File Type:
Jackhammer Project
Game Files

How to open JMF file?

Double click the jmf file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .jmf extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the jmf extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the jmf file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open JMF files

  • Windows Windows
    • Chain Studios Jackhammer Chain Studios Jackhammer
  • Linux Linux
    • Chain Studios Jackhammer Chain Studios Jackhammer

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the jmf file as well. Download Universal File Viewer for your OS.

Download for Win
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Download for Mac
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