If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .kmn

On this page, we're going to take a closer look at the .kmn file extension, which is related to Keyman Developer Keyboard Source File.

We'll explain what exactly a .kmn file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .kmn files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. Keyman Developer Keyboard Source File

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Keyman Developer Keyboard Source File

kmn file - Keyman Developer Keyboard Source File
The KMN file belongs to the Development category and works with Keyman Developer, being used as a Keyman Developer Keyboard Source File. Keyman Developer is a tool for creating Windows and Web keyboards in any language. A .KMN file is a keyboard source file. This holds all the code used by a Keyman Desktop keyboard, uncompressed in plain text. The developer is still actively supporting the Keyman Developer, likely. Our data shows that Keyman Developer uses 6 more file types.
Application: Keyman Developer
Program name: -
Category: Development files
Mime-type: application/octet-stream
Related extensions:
.pxx Keyman Developer Encrypted Customisation File
.kps Keyman Developer Package Source File
.kpp Keyman Developer Product Installer Source File
.kvk Keyman Desktop Virtual Keyboard File

The .kmn file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .kmn extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .kmn file extension wrong?

In our database, we came across the following similar extensions:

.knm iWork Keynote Macro
.km BMC Patrol Knowledge Module
.mmn Memory-Map Navigator Data
.kmb AiM SmartyCam GPS Manager Track Data
.knn Clarion Database Key Data
.kmm K-Meleon Macro Module

The .kmn extension is frequently misused

People sometimes confuse the .kmn filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

kmm (1), kln (1), mkn (1), km (1), knm (1), kmg (1), kmb (1), omn (1), knn (1), mmn (1)

Having trouble opening a .kmn file?

If you want to open a .kmn file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .kmn association can trigger this error.

Windows can't open this file:

File: example.kmn

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android