Step 1: stop running the same damn ad sizes
90% of Advertisers only run 4-6 creative sizes. It's really dumb, there, we said it. The more sizes you run the better inventory you can buy and the better you can optimize towards the best performing sizes. Don't have the time to create 30+ banner sizes? That's why we do it for you. It only takes 24 hours, and cost you nothing unless the campaign goes live.