.CISO File Extension

File Type:
Compact ISO File

Having trouble opening .ciso extension? Don't panic! This page explains what ciso files are as well as suggests programs you may use to open ciso files. You can download these programs through this page.

What is a CISO file?

Ciso file extension has Compact ISO file type, which is associated with the "disk image files" category.

This is a disc image container format for CDs and DVDs that was developed for more efficient disc storage and CD\DVD distribution. .CISO files store a full copy of information from the original disc minus some unnecessary "junk data." CISO files are often used to save Wii games. CISO files have a structure similar to .ISO files but they are more compact (due to wiped out "junk data"). The format also features digital signing and password based encryption for software distribution.


To learn how you can open the given file, read the information below.

ciso file icon
File Type:
Compact ISO File
Disk Image Files

How to open CISO file?

Double click the ciso file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .ciso extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the ciso extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the ciso file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open CISO files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the ciso file as well. Download Universal File Viewer for your OS.

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