Google Search Console can be used to check indexing status and optimize the visibility of websites. You can also check which external websites link to your page, and as I was browsing the "Top linking sites" page I noticed a major scroll lag. This happens when choosing to display a larger dataset (500 rows) instead of the default 10 results.
As someone interested in frontend performance, I could not resist diving in to see if I could figure out why. After all, Google is pushing hard on web performance so one would expect them to set a good baseline in their own public-facing apps.