The problem I frequently work with 3D models in the web and therefore with .gltf or .glb files. These formats are the best choice for compressing and optimizing models for the web but they still seem to lack support in operating systems and their file managers. That is also the case for the preview icons. For example, that's how a .gltf file shows up in the default file manager in Fedora 38, which is Nautilus: That's obviously not very helpful....

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