CGM file format description

Many people often share .cgm files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .cgm files. To address this issue, we have created this page to offer assistance and guidance on handling .cgm files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cgm files.

Our aim is to simplify the process and promote seamless use of the .cgm file format.

3 filename extension(s) found in our database.

.cgm - Computer Graphics Metafile

The CGM graphic files are related to Vizex Reader. The CGM file is a Computer Graphics Metafile. Computer Graphics Metafile (CGM) is a file format for 2D vector graphics, raster graphics, and text, and is defined by ISO/IEC 8632.

Application:Vizex Reader
Category:Graphic files
Magic:- / -

Computer Graphics Metafile related extensions:

  • pla AtariTools-800 Player Data
  • fge Atari 8-bit Floor Designer Image
  • cpx CinePaint XML-tagged Image
  • cps Colored PostScript
  • xep XenoDream Graphics Data
  • mrw Minolta RAW Image

.cgm - Altair FEKO Matrix Equation Data

The CGM data files are related to Altair FEKO. The CGM file is an Altair FEKO Matrix Equation Data. Altair Feko is a comprehensive computational electromagnetics (CEM) code used widely in the telecommunications, automobile, space and defense industries.

Application:Altair FEKO
Category:Data files
Magic:- / -

Altair FEKO Matrix Equation Data related extensions:

  • epc Firehand Lightning Encapsulated Photo Collection
  • trd Lingea Lexicon Dictionary Data
  • cht Generations Family Tree Chart Data
  • rrec PlasmaEPG Recording State Data
  • dws Adobe Dreamweaver Site Cache
  • nu3 Norton Utilities Backup Data

.cgm - Heroes of Might and Magic III Saved Game

The CGM game data files are related to Heroes of Might and Magic III. The CGM file is a Heroes of Might and Magic III Saved Game. Heroes of Might and Magic III is a turn-based strategic war game, set up in a classical role-playing game Environment.

Application:Heroes of Might and Magic III
Category:Game Data files
Magic:- / -

Heroes of Might and Magic III Saved Game related extensions:

  • age3yscn Age of Empires III: The Asian Dynasties Scenario Data
  • xarc The Longest Journey Audio Data
  • hca Pro Evolution Soccer 2014 Sound
  • xga Diamond Mind Baseball Account Info
  • cam NASCAR Racing 2002 Camera Settings Data
  • bun Need for Speed: Undercover Game Data

Be careful.

It is important to understand that the .cgm file extension is not limited to a particular set of applications. Other programs besides the intended ones can also use the .cgm extension to create files. This includes potentially harmful programs or malware that may generate .cgm files for various purposes. Be especially cautious with .cgm files coming from untrusted or unknown sources.

Can't open a .cgm file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize an extension, you receive the following message:

Select an app to open this .cgm file

To set the .cgm file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. Under the Default apps section, you will find various categories such as Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate, such as Photos for image files or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the desired app is not listed, click on More apps to see additional options or click on Look for an app in the Microsoft Store to search for apps in the Store.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set .cgm file association. Many applications can open .cgm files without requiring any specific file association to be set.

The .cgm file extension is often given incorrectly

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. Our goal in providing this list is to help users find the right information more easily and enhance their overall search experience on our website.

These misspellings were the most common in the past year:

cbm, cfm, cg, cgh, cgk, cgl, cgn, chm, cm, cmg, cnm, crm, ctm, cvm, cym

Is it possible that the filename extension is misspelled?

There is a possibility that the .cgm filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .cgm:

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you find the information on this .cgm page useful, please feel free to link to this page. >> CGM file