.cso Compressed CD image
Other formats
| MIME type | application/x-compressed-iso |
|---|---|
| Description | Compressed CD image |
| Category | Other formats |
| Signature (magic bytes) | 43 49 53 4F (CISO) |
Frequently asked questions
What is a .cso file?
A .cso file is a “Compressed CD image” (MIME type application/x-compressed-iso).
How do I open a .cso file?
With the program that created the file. On Linux, xdg-mime query default with the MIME type shows the default application, and xdg-open opens the file with it.
How can you tell a genuine .cso file?
By the bytes at the start of the file, the signature (magic bytes): 43 49 53 4F (CISO). On Linux and macOS, file --mime-type example.cso checks the real type regardless of the extension.
Which MIME type belongs to .cso?
The MIME type is application/x-compressed-iso. In the Apache web server: AddType application/x-compressed-iso .cso; in nginx: types { application/x-compressed-iso cso; }.