Bulk update materials? (or 1-1 import of Blender materials?)

Hi all,

I’m working on a fairly large model that has 80+ materials.
I noticed when exporting a Blender model into Sketchfab the material settings are not exactly the same. (and I don’t look forward to manually updating 80 materials in the 3D editor.)

An example in Blender:
The green cube has roughness 1 and specular 0
The red one has roughness 0 and specular 1

When importing in Sketchfab the result is:
The green cube has roughness 1 and specular 0.5
The red one has roughness 0 and specular 0.5


It seems the specular settings are not imported as they are both 0.5

My questions:

  • Is bulk updating all materials possible in Sketchfab?
  • How do I make sure the correct materials settings are used when exporting my Blender model to Sketchfab?

Cheers,
Ed

Anyone can help me out with this?
Thanks