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

Details of extension .cdu

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .cdu file?
  • Which program can create the .cdu file?
  • Where can you find a description of the .cdu format?
  • What can convert .cdu files to a different format?
  • Which MIME-type is associated with the .cdu extension?
CDU Paint Image .cdu file icon

CDU Paint Image

The CDU file is a CDU Paint Image. CDU Paint is an image editing software on Commodore 64 computer.
Detailed description not available
Category: Graphic files
Application: XnView
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Artist 64 Image
C64 Doodle Compressed Image
Draz Paint Bitmap
C64 Fun Painter 2 Image
C64 GunPaint Image
C64 Image System Multicolor Bitmap
C64 Picasso 64 Image
C64 Saracen Paint Image
Vidcom 64 Image

Other types of files may also use the .cdu file extension. If you have helpful information about .cdu extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

CryptLoad Update Data
STK City Database Main File
Gear CD-ROM CD-i Image
DiscJuggler CD-Rom Data
CADKEY Document
Cinderella Construction File
Symantec Client Firewall Update Policy Data
Crush Compressed Archive
Crestron Software Update

The .cdu filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ddu (1), cwu (1), cud (1), csu (1), cfu (1), cdk (1), cdi (1), vdu (1), ccu (1), fdu (1), dcu (1), cvu (1), cu (1), cru (1), cdy (1)

Can't open a .cdu file?

If you want to open a .cdu file on your computer, you just need to have the appropriate program installed. If the .cdu association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.cdu

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 whith 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 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android