CNI file format description

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

1 filename extension(s) found in our database.

.cni - CWBench Data

The CNI data files are related to CWBench. The CNI file is a CWBench Data. CWBench (CNI Workbench) is a graphical interface to view and analyze both image and geometry based data.

Application:

CWBench

Category:

Data files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

CWBench Data related extensions:

.pdf_profile: Serif PagePlus PDF Profile
.fgp: Folder Guard Password File
.smf: Serif PagePlus Metafile
.dvt: Digital Video Transcript Data
.la: Microth InPad Layout File
.espass: Electronic smartPass Data

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

Can't open a .cni 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:

example.cni

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.

Open Control Panel > Control Panel Home > Default Programs > Set Associations.
Select a file type in the list and click Change Program.

The .cni file extension is often given incorrectly!

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

cbi, cgi, chi, ci, cin, cmi, cn, cnj, cnk, cno, cnu, dni, fni, nci, ni

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.fni: ALCUGS Settings
.cbi: Crossbeam XMS Installation Package
.cin: Kodak Cineon Image
.cbi: ChessBase Old Database Index
.nci: Mastercam NCI Lines Data
.cin: Microsoft Cinemania Data

Operating systems

DataTypes.net 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

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

https://datatypes.net/open-cni-files

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