Free SSL checker tool to verify SSL/TLS certificate validity, issuer, expiration date, and chain status for any website domain.
An expired SSL certificate is one of those problems you notice the moment it happens — browsers show big red warnings and trust drops instantly. Yet it's easy to let one slip, especially with multiple domains.
Our free SSL Lookup tool checks the certificate for any domain and gives you the full picture.
What the SSL Checker Shows
- Issuer — Which Certificate Authority issued it
- Valid from / Valid until — Exact dates
- Subject — The domain it was issued to
- Certificate chain — Intermediates connecting to a trusted root
- Days remaining — Time until expiry
Why Regular Checks Matter
Rather than waiting for a customer to tell you "your site isn't secure", run an SSL check weekly and renew with time to spare. If you're switching providers, the lookup also verifies the new certificate is properly configured before you point traffic at it.