Tool designed to simulate the googlebot fetch & render. Will return
rendered, and initial source code (obeys the user-agent specified) and a
screenshot at desktop resolution & mobile resolution.
Optionally you can also run a lighthouse test as well. Although intended to match, parity with the Google WRS cannot be guaranteed, always confirm in either the Mobile-Friendly Test or URL Inspection tool in Search Console.
Test results deleted after 5 mins max, tests are not logged.
URL is required
Fast mode takes near instant snapshots, and may miss some slower
to load content and features, turn this off if you are getting
Flattening the DOM will pierce the Shadow DOM, and also render content of iframes EXPERIMENTAL