Remove unused material slots from all selected meshes at once in Blender 2.8+

This addon checks each selected mesh and removes unused material slots that may be still attached to you meshes. It will not delete unused materials from your blend file. It specifically targets excessive material slots.

I found it pretty useful in cases where you have to separate an imported fbx into different pieces. By default all the newly created meshes will inherit all the applied materials of the original fbx, even if the single mesh does not use all of them. With MatSlotCleaner, instead of having to go through each mesh and remove unused slots, you can do it with just one click.

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