I tested Koru, https://boxshot.com/koru/

Very nice results.

This software could create a webpage or web component.
You could show those pages with a smartphone navigator too.
It permits to add colors, decals, interactivity...

A small example I made with a Moi3D model, http://www.maxetjuju.org/stockage_internet/brian_may_pin.html

Look on https://boxshot.com/koru/gallery/ to see possibilities

I have used in the past the free SPline online
https://moiscript.weebly.com/spline.html
(animations with mouse are on the page scrolling down)
Had a very cool true 360 ° that has not SKetchfab or Koru! ;)

Thanks everyone for now, great help as usual!

Franz

Hallo AlexPolo!

3dviewermax seems really simple,
I made a quick test...

https://app.3dviewermax.com/631a449a-8d70-482c-8820-d61ba5217058

There's one thing I don't think I've understood yet: is it possible to split the models without the receiver being able to change them?

2023 11 26: My question has already become superfluous, I'm a bit further on now, that's quite enough for me.
There is the possibility to lock the object, I came across it. Making the structures with jpg is very easy.

https://realitymax.co/xkDRQO

Thank you and best regards!

Franz