ISZ File Extension
Have a problem opening a .ISZ file? We collect information about file formats and can explain what ISZ files are. Additionally we recommend software suitable for opening or converting such files.
What is the .ISZ file type?
The .isz filename extension stands for the ISZ CD/DVD Image File (.isz) file type and format invented by EZB Systems and introduced in their commercial UltraISO application. UltraISO supports a whole range of disk image formats, provides image mounting capability, and uses ISZ natively. Possibly standing for "ISO Zipped," ISZ is a proprietary compressed disk image format loosely built on the ISO specification, with added compression (ZLIB or BZIP2) and encryption (AES 128-192-256).
An .isz file is a disk image in the ISZ format created by UltraISO or another format-compatible tool. Thanks to the efficient compression, ISZ image files are generally smaller than regular ISO images. Like other disk-image files, .isz files can be mounted as virtual disk drives.
ISZ CD/DVD disk images are best handled by UltraISO, although there are other disk-image manipulation utilities that can read and/or write files in the ISZ format. Additionally, there are converter tools that can convert .isz images into other disk-image formats like ISO.
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