Spectabis definitely does not automatically fetch boxart. I know because I had to use my Giantbomb API key and refetch over 600 titles individually. Even once you check the box for automatic scraping nothing happens.
I used FixIso to rename all of the games in my folder to their proper SLUS codes and there's still a bunch that aren't named properly when I go to fetch boxart for them. This is not a dealbreaker for me, it's just going to take a good chunk of time to get all the missing art hunted down (about 50 out of 600+ titles not found)
ALL IN ALL:
Spectabis is fantastic in its functionality when it does what it is purported to do.
ALL IN ALL: Spectabis is fantastic in its functionality when it does what it is purported to do.