A daily updated filename extension database!

CPJ file extension

The table below provides useful information about the .cpj file extension. It answers questions such as:

  • What is the .cpj file?
  • What program do I need to open a .cpj file?
  • How can the .cpj file be opened, edited or printed?
  • How can I convert .cpj files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ WinOnCD Project

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.
CPJ format description not yet available
Category: Project files
Application: Roxio Creator
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
CPJ aliases:
CPJ related links:
CPJ related extensions:
WinOnCD Disc Image

WinOnCD Data

Other types of files may also use the .cpj file extension.

🚫 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?

We found the following similar file extensions in our database:

Nexilogic Pixbend Studio Project
VideoPad Project
SlickEdit Project
Cisco Secure Policy Manager Settings
MS-DOS Code Page Information
Lifo-Pro Consumer Price Index
Atari 8-bit Marco Pixel Editor Image
PhotoStage Slideshow Project
Yaskawa IndexWorks Project
Calamus Document

🔴 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .cpj file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .cpj file extension, write to us!

🔴 Rate our CPJ page

Please help us by rating our CPJ page on a 5-star rating system below. (1 star is poor, 5 star is excellent)

4 of 5 stars (16 votes)
Thanks for voting!
Invalid vote.
Browser: Abbreviation Application Archive Audio Configuration Data Development Disk Image Document Ebook Font Game Data GIS Graphic Malware Multimedia Other Project Scam Unknown Video
This page is available in the following languages: Český Deutsch English Español Suomi Français Magyar Italiano 日本語 Nederlands Norsk Português Român Русский Svensk 中文