Having problems opening an ISZ file?

We have programs that can open or convert your ISZ files.

Opening ISZ files

Did your computer fail to open an ISZ file? We explain what ISZ files are and recommend software that we know can open or convert your ISZ files.

What is an ISZ 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. Very large 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.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension ISZ

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the ISZ file format or software that uses files with the ISZ suffix, please do get in touch - we would love hearing from you.