I have recently been importing and modifying models from sites such as CGTrader. When I work on the materials for models, it often seems that objects have unused material slots.
At the moment, I'm just going into Edit mode, clicking the "Select" button for each slot, then scouring the object to see if any faces are selected, before deleting the slot if it is unused.
However, it seems there should be a more efficient way of doing this. Can anyone enlighten me please?