>> JSO file

JSO file format description

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

1 filename extension(s) found in our database.

.jso - JISO Compressed PSP ISO Image

The JSO disk image files are related to PSP ISO Compressor. JSO file is a JISO Compressed PSP ISO Image. It is used to compress dumped Sony PlayStation Portable (PSP) UMD games. The PSP ISO Compressor seems to be no longer supported.

PSP ISO Compressor
Disk Image files
- / -
JISO Compressed PSP ISO Image related extensions:
DiscJuggler CD Image
WinUAE Compressed HDD Image
WinUAE HDD Image
Compressed Amiga Disk Image
Amiga Disk Image
C-Xbox DVD Image

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

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

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

mso, jsl, iso, so, jsi, jos, jco, nso, jsp, jsk, js, jo

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Visual J# Project
JavaScript Style Sheet
JMP Scripting Language File
Java Serialized Object
Microsoft Office Rendering Data
ISO 9660 Cd-Rom Disk Image

Operating systems

DataTypes.net 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 .jso file format, then write to us!

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