There is currently one legitimate way to play PS3 games in a browser: Cloud Streaming.
This is the most important section for you. Sony officially allows you to play PS3 games in your browser with a full experience. ps3 emulator on browser full
Is this a "PS3 emulator in browser full"? Technically, no. It is streaming. But from the user’s perspective: You open a browser tab, click "Play," and the PS3 game runs perfectly. For 99% of users, this is the answer they are looking for. There is currently one legitimate way to play
Microsoft is working on Xbox 360 emulation (not PS3). But via a browser, you can play Xbox 360 games. Not PS3, but similar generation titles. Technicality: This is not emulation
If you have a decent laptop or desktop, stop looking for a browser shortcut. The gold standard for PS3 emulation is RPCS3.
While it requires a BIOS dump and game files (which you must legally own), it is the only way to truly experience the "full" PS3 library without the lag of streaming or the risks of browser scams.