As I am using Blender 2.8 - I tried to export some models with animations as fbx and collada - which didn´t work out great. For the reasons to me unknown - maight be some issues by the export - to what features must be included or some problems with the exporter itself.
A successful result I had just had with export obj in a sequence in zip files which seems not like the best way in size and performance and then is there the problem with the static number of vertices and faces.
Will there be a support for GLTF2.0 in the future? As it seems in combination with webgl a good choice and is added as an export option by blender, too.