I commented a long time ago about this.
Later found Light Tracer Render https://lighttracer.org/ (a bargain at black Friday)
The previous version 2.91 handle this, it will be included in 3.1 later in some month.
It is not seamless, but with some careful naming of parts it is easy to transfer an .obj and sort out materials. And it is really fast, even at M2. And it feels really QD compared to what I use otherwise; Fusion, FormZ Render, Strata, Maxwell (farm)
Simple to generate html code to be embedded in you site, clean from comments and promos. http://3d.hudson41.com/ would prolly work (some domain redirects)… Shapr version: Shapr3D Webviewer
(100% Shapr)
Or go for GLB, How to Use GLB Files for Web Design is another (rather complicated) way to go… to much work for me.