Enter a domain to see its live badge and copy the embed code.
What the badge shows
Valid
The certificate on the wire is trusted and current. The badge shows the days left before it expires, so a quiet number turning small is its own warning.
Expiring
The certificate is inside its final stretch. The badge turns amber and counts down, so a visitor and the site owner both see the deadline coming.
Expired or unreachable
The certificate has passed its date, or the host did not answer a clean handshake. The badge says so plainly rather than showing a stale green.
Questions
Is the badge free?
Yes. The badge reads the certificate a host serves, the same handshake a browser makes, and needs no account. Embed it on as many sites as you like.
Does it stay up to date?
The badge re-reads the certificate on a schedule, so it reflects the current state without you touching the HTML again. A renewed certificate turns it green on its own.
Where does it link to?
The badge links to a full CertPost check for the same domain, so a visitor who clicks it sees the chain, the expiry, and the grade behind the badge.