ISZ File - opening and understanding

Did your computer fail to open an ISZ file? We explain what they are used for and recommend software that we know can open or otherwise handle your .ISZ 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

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension ISZ for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different ISZ openers which you will find listed below.

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 viewers for this file format

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.

Alcohol 52%Alcohol 52%User submitted
PowerISOPowerISOUser submitted
WinMount ApplicationWinMount ApplicationUser submitted
WavePad Sound EditorWavePad Sound EditorUser submitted
Switch Sound File ConverterSwitch Sound File ConverterUser submitted
Pixillion Image ConverterPixillion Image ConverterUser submitted
DAEMON Tools LiteDAEMON Tools LiteUser submitted
UltraISO PremiumUltraISO PremiumUser submitted
DAEMON Tools ProDAEMON Tools ProUser submitted
BandizipBandizipUser submitted
We have not verified any software that we know for certain will work with ISZ-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with ISZ-files. If you know one, please use the 'Suggest a program' link below and tell us about it!