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.

Data files
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CWBench Data related extensions:
Serif PagePlus PDF Profile
Folder Guard Password File
Serif PagePlus Metafile
Digital Video Transcript Data
Microth InPad Layout File
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:


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 .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:

ALCUGS Settings
Crossbeam XMS Installation Package
Kodak Cineon Image
ChessBase Old Database Index
Mastercam NCI Lines Data
Microsoft Cinemania Data

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

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

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