Files with shz file extension can be found as old Ximage files. Seems like obsolete.
SHZ file extension - Ximage data
What is shz file? How to open shz files?
File type specification:
The shz file extension seems to be used in some old program called Ximage.
No further information regarding this file type or the software could be found, so it is likely obsolete.
This shz file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.