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SSL Certificate Checker

Inspect a public website certificate, expiry date, issuer and verified TLS connection.

Free No sign-up Instant results

Use a full HTTPS URL. We inspect the certificate for its hostname, without following redirects.

Checks expiry, issuer, hostname and trust using this server’s certificate store. No cipher grade, revocation check or ongoing monitoring.

URLs are sent to the GigaTools server and the destination websites. Do not submit private or signed links. Only public IPv4 destinations on standard HTTP and HTTPS ports are supported.

Diagnostic report

Your report will appear here.

Common uses

  • Check certificate expiry before renewal
  • Investigate a hostname or certificate-chain warning

How it works

How to use SSL Certificate Checker

Enter the HTTPS address

Use the exact hostname you want to check. A certificate can work for one subdomain and fail for another.

Inspect the certificate

Run the check to inspect the certificate returned by that host. Expiry dates and trust are evaluated from this server’s connection.

Keep a record and investigate

Download the report. If validation fails, check your hosting provider’s certificate installation and retest after the fix.

FAQ

Good to know

How do I use SSL Certificate Checker?

1. Enter the HTTPS address: Use the exact hostname you want to check. A certificate can work for one subdomain and fail for another. 2. Inspect the certificate: Run the check to inspect the certificate returned by that host. Expiry dates and trust are evaluated from this server’s connection. 3. Keep a record and investigate: Download the report. If validation fails, check your hosting provider’s certificate installation and retest after the fix.

Does this give an SSL Labs grade?

No. This is a certificate and connection check. It does not exhaustively test protocol versions, ciphers, revocation or every browser’s trust store.

Will this renew my certificate?

No. Nothing is installed or changed. Renew through your certificate provider or hosting service, then run another check.

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