Est run time: 20-75s, depending on rows.

Usefulness: Your competitors' above-the-fold real estate tells you a lot about how they are positioning themselves. It's good to recheck these every 2-3 months.

Caveats: Put URLs in a CSV - column A, no headers. For the some sites, the screenshot contains a lot of empty white space. We, nor our intern Steve, can not figure out why.

Bot Blocking: Some sites - especially Cloudflare users - may block or throttle our bots. If so, the numbers will be empty or wonky.