If you truly want a compressed, safe library, skip the sketchy aggregators and do this instead:
If you download a PS1 game and it is a .7z file under 100MB, it is playable . If you extract it and see a .bin of 700MB, you did it right. If you see a .exe file – delete it immediately (see safety below). saferoms highly compressed
: Use open-source extractors like 7-Zip or WinRAR to open archives. If you truly want a compressed, safe library,