: These keep 100% of the game content and only remove the unnecessary storage padding. How to Compress Your Own ROMs
Right-click inside the folder, select New > Text Document , and name it compress.bat (make sure the file extension changes from .txt to .bat ).
Most custom firmware builds for these handhelds rely on RetroArch cores, meaning your .chd files will work perfectly right out of the box. Safety and Troubleshooting Tips
: This format was created by Sony to run PS1 classics on the PSP. PBP files are highly compressed and can merge multi-disc games (like Final Fantasy VIII ) into a single file. Ps1 Roms Highly Compressed
: Avoid sites offering "highly compressed" games in .exe or .rar formats that claim to decompress into massive files; these are often vectors for malware or viruses.
A classic utility for PSP-compatible compression. ⚠️ A Note on Quality "Highly Compressed" should never mean "Low Quality."
: Originally created for playing PS1 games on the PSP. It is excellent for multi-disc games (like Final Fantasy VII : These keep 100% of the game content
High compression levels (8–9) can significantly increase CPU load and conversion time. For PS1 games, level 5–7 provides excellent compression without excessive processing time.
Often used for PSP, but occasionally seen for PS1 ISOs to reduce footprint without stripping content. Highly Compressed vs. RIPs
To download and play PS1 ROMs, you'll need: Safety and Troubleshooting Tips : This format was
If you must download because you cannot rip your own discs, and stick to well-known databases (like the Internet Archive's Redump collection). Never run an executable file that claims to be a ROM.
What are you using for emulation? Which emulator do you currently prefer? Share public link