Finally, after two sleepless nights I finished a web application that
converts obj, fbx, glb, gltf, stl formats to mesh2:
https://povlab.yesbird.online/all2pov

I tested it only on a limited number of files, so some issues
(especially related to displaying a model) are possible, testing  now in
progress. Please send any kind of feedback: bug reports, suggestions,
requests to implement, etc.
--
YB

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