Overview
3D Viewer is a small desktop app for checking models without opening Blender, Unity, or another heavier tool every time.
It opens .glb, .gltf, .fbx, and .zip files, including zipped glTF or GLB models. You can move around the model, try different lighting or HDRI setups, and switch to clay or wireframe to check it. Root motion can be turned off for animated models, and you can group model variants with a small JSON file and swap between them.