This blog post lists some resources used to view and validate glTF/GLB 3D files.
Khronos Group glTF Test Viewer
As a test, a Blender model of Supercar (see this blog post) was exported to glTF (.glb or .gltf) and tested in the Khronos glTF Test Viewer, which is intended to act as a benchmark for such models.
Khronos Group glTF Validator
ModelViewer.dev glTF/GLB Viewer with Khronos glTF Validator Built In
Again, as a test, a Blender model of Supercar (see this blog post) was exported to glTF (.glb or .gltf) and tested in the ModelViewer Tool, which can also export the model in a form which can be viewed via a web browser. Click here for the 3D view of Supercar.
Microsoft glTF Tools Extension for Visual Studio Code
glTF Import/Export for Unity – Unity glTFast
- glTFast Installation Instructions