CDK file format description

CDK file format

We made this page to help you understand how to work with CDK files. Here, you can find info on software that can handle these files. It includes simple programs for opening and converting them.

Learn about the CDK file and its functions here!

We also explain how to convert them into other types. It's simple and hassle-free. For opening or changing CDK files, this page offers all the tools you need.

#1 CADKEY Document

The CDK file is categorized under Document. It is associated with CADKEY, serving as a CADKEY Document. CADKEY is a 2D/3D Mechanical CAD software application released for various DOS, UNIX, and Microsoft Windows operating systems. Visit the website of CADKEY for a detailed description of the CDK format.

Category:Document files
Magic:- / -

CADKEY Document related extensions

  • cadl CADKEY CAD Advanced Design Language File
  • cde CADKEY Dynamic Extension
  • cdw CADKEY Organized Dialog Data
  • ckd CADKEY Design Document

#2 Calamus Document

The CDK file is categorized under Document. It is associated with Calamus, serving as a Calamus Document. Calamus is a desktop publishing application, built for Atari computer. Calamus is still supported by its German owner company, invers Software, and also runs under a built-in and transparent Atari emulator on Windows, or on other platforms such as Mac OS 9 and Mac OS X, using any available TOS emulator. Visit the website of Calamus for a detailed description of the CDK format.

Category:Document files
Magic:- / -

Calamus Document related extensions

  • cfn Calamus Font Data
  • crg Calamus Raster Graphics Data
  • cvd Calamus Vector Drawing
  • cvg Calamus Vector Graphic

Did someone accidentally misspell the CDK filename?

The CDK filename extension may be misspelled. We compiled a list of similar file extensions to help you find errors.

Filename extensions similar to CDK:

Windows can't open your CDK file?

When you try to open a file by double-clicking it, Windows looks at the file's name to figure out what to do. If Windows doesn't know the file type, it'll ask you to choose an app to open this CDK file.

To set the CDK 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. In the Default apps section, you will find various categories. They include Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate. For example, choose 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 app you want is not listed, click on More apps to see more options. Or, click on Look for an app in the Microsoft Store to search for apps.
  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 CDK file association. Many apps can open files. They don't need a specific file association to be set.

Handle CDK files with care

Exercise caution when handling CDK files from unknown sources. Files from certain sources can threaten your computer's security. They might contain malware, viruses, or harmful software. To minimize risks, avoid downloading or opening unfamiliar CDK files. Use trusted antivirus software to scan files from unknown sources before opening.

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