File Extension CSO
Information about CSO files and how to open them
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What is a CSO file (a file with file extension CSO)?
Files that contain the .cso file extension are compressed image files that are most commonly used to archive games that have been designed for use on the Playstation PSP portable gaming system. The CSO file format was the first compression method used for ISO file purposes.
The CSO files are saved in an ISO disk image format and they may contain up to nine levels of compression. It is important to note that the more compression that a CSO file has, the longer it will take for the disk image to load. This can have a significant impact on the user's gameplay or computing experience.
Last updated July 25th, 2011
Product(s) that open CSO files
We currently don't have any products listed that are known to open this specific type of file, but we recommend trying a multi-purpose file opener:
FreeFileViewer is a universal free file opener that can open almost any file, like photos, videos, documents, spreadsheets and more. Click to download.
Do you want personal assistance opening your CSO file?
We have technical staff ready to help you round-the-clock, 7 days a week. They are familiar with all kinds of problems opening files. In fact, they can help with almost any technical issue you have, like opening CSO files, PC speed and performance, malware removal, software uninstallation etc.
Free problem diagnosis! Give us a call, day or night, at 855-246-1076 (toll-free USA and Canada). Everything is handled over the phone or by remote PC connection, so no visit to your home is necessary.