Do you check backlinks, rankings, or keywords?
No. Those require data from outside the page, and this is an inspection of what one public URL shows the world. Any tool claiming to read your rankings from your own markup is telling you something that is not true.
What We Check
Answer it for your own page
The inspection is free, needs no account, and takes a few seconds. It reports what is actually wrong with a page rather than what is generally true about pages.