Do you know how to do that in Unity WebGL? I thought it scales to size of the window when full screened, is there a way to expose different resolution scaling options in the settings?
Ah crap you are right, it's down-scaled to 80%, I thought it was using my PC URP preset, but it was using the mobile one. The mobile preset also had other issues like an extra post processing volume, no anti-aliasing, etc. Dang wish I could re-submit with it in it's full graphical fidelity glory RIP