CI3 file format description

Many people often share .ci3 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 .ci3 files. To address this issue, we have created this page to offer assistance and guidance on handling .ci3 files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .ci3 files.

Our aim is to simplify the process and promote seamless use of the .ci3 file format.

1 filename extension(s) found in our database.

.ci3 - Crimson 3 Image

The CI3 archive files are related to Crimson 3. The CI3 file is a Crimson 3 Image. Crimson 3 is a next-generation programming software for CR1000, CR3000 HMIs, Graphite HMIs and Graphite Controllers, and E3 I/O modules.

Crimson 3
Archive files
- / -
Crimson 3 Image related extensions:
SCOM Management Pack Bundle
Dragon UnPACKer Archive
Unraid OS Application Package
Commodore 64 Lynx Archive
ZSTD Compressed Data
Mozilla Firefox Compressed Bookmarks Backup

Naturally, other applications may also use the .ci3 file extension. Even harmful programs can create .ci3 files. Be especially cautious with .ci3 files coming from an unknown source!

Can't open a .ci3 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 .ci3 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:

c3, ci, cie, cir, ciw, ck3, cl3, cu3, i3, ic3, si3

Is it possible that the filename extension is misspelled?

There is a possibility that the .ci3 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 .ci3:

CIE Color Information Data
Eudemons Online 3D Model
PhotoLine 4 Curve Data
real-PCB Netlist Data
Cadence PSpice Circuit Data
POV-Ray for Windows Scenes Advanced Newltpot Data

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 .ci3 file format, then write to us! >> CI3 file