The Steam Deck (running EmuDeck or RetroArch) recognizes CHD files automatically. Place them in the psp roms folder, and they will appear in your gaming interface.
A standard ISO can be reduced by 20% to 50% depending on the title. psp chd internet archive
Accessing PSP CHD on Internet Archive is straightforward: The Steam Deck (running EmuDeck or RetroArch) recognizes
While you can compress ISOs yourself using tools like chdman , many contributors on the Internet Archive have already done the heavy lifting. Searching for "PSP CHD" on the site often yields complete libraries that are ready to drop onto your SD card. 3. High-Speed Torrenting psp chd internet archive