CUD file format description

Many people often share .cud 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 .cud files. To address this issue, we have created this page to offer assistance and guidance on handling .cud files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .cud files.

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

1 filename extension(s) found in our database.

.cud - ChmUpDate Data

The CUD data files are related to ChmUpDate. The CUD file is a ChmUpDate Data. If topic files in a CHM are CUD-enabled, you can add links and messages to those files without re-compiling the CHM.

Data files
- / -
ChmUpDate Data related extensions:
IMVU 3D Model
SQR Portable Format
Team Sports Scheduling System Report Template
OZ Report Data
Intuit TurboTax 2009 Tax Return Data
Drupal Module Information Data

Naturally, other applications may also use the .cud file extension. Even harmful programs can create .cud files. Be especially cautious with .cud files coming from an unknown source!

Can't open a .cud 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 a filename extension, you receive the following message:

Windows can't open this file:


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 one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .cud 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. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

cd, cdu, chd, cid, cjd, ckd, cu, cuc, cue, cuf, cur, cus, cuv, cuw, cyd

Is it possible that the filename extension is misspelled?

There is a possibility that the .cud 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 .cud:

CUDA Source Code
LogXact Data
coDiagnostiX User Defined Implant Data
ConciseURI Syntax Data
Virtual Undo Disk File
CDU Paint Image

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

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

If you have useful information about the .cud file format, then write to us! >> CUD file