The gold standard for emulation; offers better compression than ISO.
For storage space alone, converting your library to CHD or CSO saves 60-75% of hard drive space. For emulation, highly compressed ISOs can actually improve loading times on modern SSDs because there is less total data to read from the disk, even with decompression overhead. ps2 iso highly compressed high quality top
Originally created for the MAME architecture, the .chd format is now the gold standard for PS2 emulation on PC and Android (PCSX2 and AetherSX2/NetherSX2). The gold standard for emulation; offers better compression
The Ultimate Guide to PS2 ISO Compression: High Quality, Small Footprint (2026) The gold standard for emulation
A command prompt window will open. It will automatically compress your games one by one.