How do I Open a CFG online in Windows and MAC with a free .cfg opener

  • Files type: Configuration
  • Category: Settings Files
  • Files format: Open Source

Problems opening CFG files?  We will see what is a ✅.CFG extension and how to open, view, install, read, edit and covert this file format with specific programs.


What is a .CFG file extension

The CFG file extension is the format for store configuration files. The files with the .cfg are created to change program settings. You should not modify it in any way.

These files are for various computer applications, Operating Systems and processes for definition of initial settings. Any computer program can use files in the .cfg. But the location can give the user information as to what program uses it.

Usually, files with the .cfg extension are line based. Which means that it only contains one line for every setting. It does not have any strong conventions or set standards. They can also be in ASCII. You can view them using any basic text editor.

Any file that ends with CFG is a file containing configuration settings that are used on a computer. The file has a plain text format. This means it is possible to use a free plain text. Consequently, it is possible to use a plain text editor. You can also get the text editor for free.

A good example of a free text editor is the Windows Notepad that is already on your computer.

You can use the Notepad to edit, open and save the file in the CFG format. Each of the CFG files contains its personal settings for a Windows program. Also, you can store and open them without the involvement of third-party software.

Types of .CFG files

The .cfg file extension has seven different types of files. See below:

  • LightWave Configuration
  • Celestia Configuration
  • Wesnoth Markup language
  • Cal3D Model Configuration
  • Citrix Server Connection
  • MAME Configuration
  • Configuration File

Celestia Development Team developed the file. And it is a Settings File type.

It is in the Text format. The .cfg is a 3D universe simulation program. After being saved as a plain text, the file will specify the data files to be loaded when you start the program.

The end user can also edit the program. But should be carried out carefully. Any form of improper change to this file can bring about a failure in the loading process.

Cal3D Model Configuration File is an open source character animation toolkit. It is a three-dimensional model configuration file and used by Cal3D. The file is also in the Text format and contains several references to model components.

It is also  for combining all model components together. The file contains several references to Cal3D files, like .xsf and .csf extensions, as well as animation files. It also contains meshes and materials files. The .cfg can store the root directory for the model scale and referenced files.

The MAME Configuration File is a settings file and comes in the XML format. The file is in arcade video game emulators and also contains hotkeys and keyboard mapping in playing games.

It is equally used in the configuration of keyboard controls depending on the preferences of the player. You can save different .cfg files for different games.

It gives the game players the ability to easily customize game controls separately based on the game that is currently being played. The file can be accessed both on Windows and Mac operating system.

The configuration file is also another Settings File and comes in the text format. The file is called .cfg association 4 and is a generic preference file capable of storing configurations and settings information.

It is also used by many programs, which translates to the fact that various .cfg files can store data in various formats. It is not advisable to open .cfg files manually. However,you can view them using a text editor if you save it in the text format.

.cfg files based on text formatting usually contain one value and variable per line in different formats.

The program can also generate a default .cfg automatically and this can be tested by moving the configuration file away from the default directory anytime the program is not currently running.

Afterward, you can open the program to examine the directory for any newly created files. You can delete or move the files to revert to the default settings of the program.

In the case of Linux configuration, the .conf extension is better than the .cfg extension. This type can also be opened using various programs in Windows and Mac Operating Systems.

The Citrix Server Connection File is a Settings File from Citrix Systems. The file contains the required connection information needed to connect the Citrix server. It may also include a password, username, server port, IP address, hostname and so on.

Citrix client software may use multiple .cfg for connecting to various servers. You can open This file  various Linux, Mac, and Windows programs.

The Battle for Wesnoth developed the Wesnoth Markup Language File. They are game files and comes in the Text format. The file is a turn-based strategy game file for Linux, Windows, and Mac.

It is also available for free. The source code of the file is in the Wesnoth Markup Language (WML). The file is a proprietary language especially for the creation of units, campaigns, scenarios and other contents of the game, The Battle for Wesnoth.

You can use a text editor to edit CFG files. Some WML plugins that highlight syntax have also been developed for various text editors, Vi and Emacs, for example.

Newtek developed LightWave Configuration File . It is a Settings File. A preference file for rendering and modeling applications for all animation and frames sequences.

It equally used in saving different categories of application configuration options, as well as, to remember presets for the end user.

Celestial configuration files can contain references to several data files like .txf, font definition, .cel scripts, .dsc data files, .ssc and .stc.


How to Open CFG Files 

The following software include editors, viewers, readers, installers and file openers. These programs will help you opening CFG files.

Software to Open with Windows:
  • Citrix Access Client,
  • Pro/Engineer,
  • Proxomitron,
  • Celestia
  • Notepad
  • Microsoft Word
Software to Open with Linux:
  • Citrix Access Client, Celestia
Software to Open With MAC:
  • Celestia
These files contain configuration and settings information for a variety of programs. The user must not attempt to open it manually.
If the user wants to go back to using default settings for the program. He can move or delete it.


  1. Click on the “Start” button on your desktop.
  2. Then type the name of the file that you want to open in the search text box and then press “Enter.”
  3. Now right-click on the .cfg that your result windows displays.
  4. Then click on “Open With” that you can find in the popup menu.
  5. Next, click on “Notepad” in your pop up window list of programs.
  6. Next, view the .cfg file and then edit the configuration any way you want. The specific type of modification you make in the .cfg file can be determined by the particular program that is using the .cfg file.
  7. Afterward, press the S and CTRL keys together and this will save the file in your computer.
  8. The system will save the file in any location you choose on your computer in the .cfg file format for as long as you want.

You can open these files in both Windows and Mac operating systems, as well as Linux using various programs, some of which are free to use.

How to make a Config file

A program can generate a file with the CFG format. To check if the program can generate a default config file, the configuration file can be moved out of the default directory, provided that the program is not running.
The default directory can be checked if a new file with the CFG extension has been created in it.


Problems opening a .cfg file?

Ensure you have the last version of the recommended software installed. If not, download the last version.

Depending on what you are doing, you will need a viewer, editor, reader, installer or file opener.

Ensure that your cfg file is not corrupted. If needed, download it again.