ISZ File Type- The quick facts
What are ISZ files and how to open them
Are you having problems opening an ISZ file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is an ISZ file?
An .ISZ file is an ISO Zipped file.
Files that contain the .isz file extension normally store compressed disk image files. ISZ files are very similar in nature to ISO files, but the contents of an ISZ file are compressed in order to make the file smaller and save disk space.
The ISZ file format also supports password protection and encryption. Huge ISZ files may be split into separate volumes. The smaller file sizes of the split archive make it easier for users to distribute the files over the Internet. The ISZ file format was created by EZB Systems, the same software company that created the UltraISO software application.
How to open ISZ files
Important: Different programs may use files with the ISZ file extension for different purposes, so unless you are sure which format your ISZ file is, you may need to try a few different programs.
While we have not verified the apps ourselves yet, our users have suggested 10 different ISZ openers which you will find listed below.
Last updated: March 26, 2022
Suggest another file format using extension ISZ
While we know of one file format using the .ISZ file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .ISZ file.
Various apps that use files with this extension
These apps are known to open certain types of ISZ files. Remember, different programs may use ISZ files for different purposes, so you may need to try out a few of them to be able to open your specific file.