Sandbox - generated glb size much bigger than the original one

Hi everybody,

There is something that I don’t understand with the sandbox. If I load a glb file and try to save it again as a glb file without the environment( skybox, light…), the size of the resulted file is much bigger.

Do you know why ? Is there a way to change that ?

Thanks in advance,


Maybe this post can help:

Ok, I understand. Do you know is there’s still an issue about that or do you want me to post a new one ?

Thanks for your answer,


We already have some issues created for the glTF exporter:

Also this if 16bit indices or KHR_mesh_quantization used in your model: