It would be great to have a Chrome extension (or Firefox, or Edgium, or Safari) that throws some kind of error starting a couple of weeks before a site's TLS Certificate expires.
Is there such a beast?
Is there another good and reasonably priced way to do this?
I ask because my test environment has some wildcard certs that have crept into various random servers. I know about the notification services, but the purpose here is to help find these places the wildcard certs have landed.