Advanced HDRi bakground tool + 64 HDRi collection

With external web-based apps, like Sketchfab for example, you wouldn’t be able to link any advanced material settings, only flat maps - So there will be distortion, but you can lock the camera in Sketchfab to the origin - I’m not sure if zooming in/out will affect it though.

The car configurator I linked before seems to handle it pretty well, any way we can export something like that?

But yeah I’d try and see if you can create a solution for Sketchfab since that’s the leading WebGL platform and a lot of artists showcase their work there - baked backdrops/AO/Shadows from an UE4 Scene that exports simple materials to Sketchfab would be great (Marmoset Viewer is used a lot for portfolios also)