: Obtain the MAME tools package and extract the chdman.exe file.
"Highly compressed" PS2 files are modified versions of these ISOs. Compression tools strip out the useless padding data and apply advanced file-shrinking algorithms. This process can reduce a 4.3 GB game down to 1.5 GB or even a few hundred megabytes, saving massive amounts of storage space. The Best Compression Formats for PS2 Emulation Ps2 Iso Highly Compressed
This comprehensive guide explores everything you need to know about highly compressed PS2 files, how they work, how to use them safely, and the best tools for managing your retro library. What is a "Highly Compressed" PS2 ISO? : Obtain the MAME tools package and extract the chdman