Workspace
Paste a product URL. The audit covers the site, not only the first screen. Green means it passed. Red means it failed. On a phone the result sits above the list: choosing a check scrolls up to it, and scrolling down shows the one you picked.
The page must load over HTTPS, with a certificate that is not about to expire.
Paste the product URL and run the audit. The result for the check you pick opens here.