How to enable WebXR support in Safari for the Apple Vision Pro
Open Settings.
Select Apps.
Select Safari.
Scroll to the bottom of the window and select Advanced.
Scroll to the bottom of the window and select Feature Flags.
Under Experimental XR Features, enable WebXR Device API and WebXR Hand Input Module.
Under WebKit Feature Flags, enable WebXR Augmented Reality Module and WebXR GamePads Module.
Exit Settings.
Open Safari, or if it's already open, refresh a WebXR-enabled page to check it is working.
Here you go for the rest: https://appleinsider.com/inside/apple-vision-pro/tips/how-to-enable-webxr-support-on-apple-vision-pro