It’s important to clarify right away:
: You must download the PS3UPDAT.PUP file from the official PlayStation System Software Update page to make the emulator work. Step-by-Step Setup Guide
The PS3 used NVIDIA’s RSX Reality Synthesizer (OpenGL 2.1 era). Modern browser emulation would have to translate RSX commands to WebGL or WebGPU in real-time—a monumental task that even desktop emulators like still struggle with for many games.
Many sites use the PS3 name to lure users into downloading "browser plugins" that are actually malicious software.