If you ignore the warnings and try a tool claiming to work, here is the typical (failed) process:
For those looking to manage these files on a PC, tools like PS4-PKG-Tool on GitHub offer a grid view to manage and rename your library before transferring them to the console. pearlxcore/PS4-PKG-Tool: Manage and perform ... - GitHub ps3 to ps4 pkg converter
Many of these sites force you to complete surveys, click on malicious ads, or download suspicious executable files ( .exe or .msi ) to unlock the "converter." If you ignore the warnings and try a
This is the most common, GUI-based converter. It features a straightforward interface where you select your ISO/folder, select a configuration, and let the tool do the work. It is frequently updated to support newer PS4 firmware hacks. 2. PS4 Patch Creator It features a straightforward interface where you select
Many users download PS2 Classics from the PlayStation Store onto their PS3. When they see a tool converting these files for PS4 use, they mistakenly believe it works for all PS3 games. It does not. This method works for PS2 games only.
The is a miracle of software engineering. It runs on standard PCs (requires a good CPU, like an Intel i7 or AMD Ryzen) and plays over 60% of the PS3 library at full speed. You can legally dump your own PS3 discs to play them on PC. This is the only true "conversion" that works today.
The rumor of a PS3 to PS4 converter often stems from a misunderstanding of actual modding tools. Developers in the PlayStation homebrew community have created tools for older generations, such as: