There are two different types of GLTF files. The GLTF 2.0 that many applications can export and there is a unique version created by the Verge3d Plugin. If I am not mistaken the exporter plugin you are referring to will create the generic GLTF 2.0 export based on the documentation of the plugin.
I am interested in what you find out. The difference we have found were specific to the scene file, lights, camera, environment, etc. Basically, the only thing we found reliable was the object itself but this was with the prior version.
It appears this has been recently updated so looking forward to what you uncover….please let us know.
This reply was modified 3 days, 22 hours ago by xeon.
At least you will need a valid license for creating and publishing your Verge3D-app. That happens standalone outside of Blender and is not covered by blenders GPL. Verge3D is an independent software that works standalone.
The exporter-addon itself should be under GPL licence, and indeed, you find the addon with the corresponding GPL licence in the folder /verge3d-blender-4.0.1/verge3d_blender/addons/verge3d