CNN file format description

Many people share .cnn files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .cnn file can be edited, converted or printed with. On this page, we try to provide assistance for handling .cnn files.

1 filename extension(s) found in our database.

.cnn - CNVkit Data

The CNN data files are related to CNVkit. The CNN file is a CNVkit Data. CNVkit is a Python library and command-line software toolkit to infer and visualize copy number from targeted DNA sequencing data.

Data files
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CNVkit Data related extensions:
Unified Emulator Format
3D ACIS Modeler Data
Zoner Photo Studio Changes Backup Data
Novagraph Chartist XML Data
PC 1000 Calculation Result Data
BeerSmith Recipe Data

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

Can't open a .cnn 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 .cnn file extension is often given incorrectly!

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

cbn, cgn, chn, cmn, cn, cnb, cng, cnj, cnm, dnn, fnn, ncn, nn, snn

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Microsoft SMS Collection Membership Update
CryptoNG Encrypted File
Visual Studio Windows CE Build Settings
Pegasus Mail New Message
Kerio WinRoute Firewall Mail Data
Pegasus Mail Noticeboard Message

Operating systems currently supports the following operating systems:

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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