>> CPJ file

CPJ file format description

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

2 filename extension(s) found in our database.

.cpj - WinOnCD Project

The CPJ project files are related to Roxio Creator. The CPJ file is a WinOnCD Project. WinOnCD is a CD writing package from CeQuadrat. It contains an audio editor, and some useful audio restoration software.

Roxio Creator
Project files
- / -
WinOnCD Project related extensions:
TI bqEASY Project
ProxyGen 9 Project
Deja Vu X3 Project
SDL Trados Project
PowerDirector Mobile Project
gBurner Project

.cpj - CUDA Project

The CPJ development files are related to Nvidia CUDA Toolkit. The CPJ file is a CUDA Project. CUDA is a parallel computing platform and programming model created by NVIDIA and implemented by the graphics processing units (GPUs) that they produce.

Nvidia CUDA Toolkit
Development files
- / -
CUDA Project related extensions:
Coda Plug-in
F# Script
JLex Code
CPB Data
JPY Data

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

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

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

clj, cp, cph, cpi, cpk, cpm, cpn, cpu, cpy, dpj, fpj, pcj, pj, spj, vpj

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Lifo-Pro Consumer Price Index
SlickEdit Project
Atari 8-bit Marco Pixel Editor Image
Sega Saturn Cinepak Video
Sietronics XRD Scan Document
Delphi Project

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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