Rated 2 out of 5 stars

Not sure if this is doing anything at all. I run the processes, but when the list says things like this:
> Vacuum
Initial database size is 20480 KiB
+ The database has been vacuumed
Final database size is 20480 KiB

In other words, it looks like it's done nothing at all, especially since that's the exact same number given when I did this a couple days ago. So, what should it be doing, and why doesn't it look it's doing anything?

Your database is already at its minimum size, if its size doesn't change, means it can't be shrinked further.