stp extension and I want to display these files on the screen with html. When I convert the files to glb format, I can view them as follows.

<model-viewer alt="" src="/assets/obj/123.glb" ar ar-modes="webxr scene-viewer quick-look" seamless-poster shadow-intensity="1" camera-controls enable-pan></model-viewer>

But I want to use stp because the glb file is too big. I could not view the stp file as in glb. model-viewer does not support the stp extension. How can I view?