Public beta

Free SSL certificate expiration checker and website health monitoring

Check SSL expiry, HTTPS status, DNS records, security headers, and email DNS configuration in one place.

No credit card required. Remove your domains at any time.

SSL_EXPIRING_SOON

example.com expires in 12 days.

Slack sent

Email sent

Dashboard history recorded

Public beta

Free monitoring during public beta

Monitoring and alerts are currently free while we improve Website Certs.

Run one-time public checks for certificate, HTTPS, DNS, and browser security header health.

Check certificate expiration, issuer, hostname coverage, and trust details.

Test HTTPS status, response time, redirects, and TLS request errors.

Look up public A, AAAA, CNAME, MX, NS, and TXT records.

Check MX, SPF, DKIM, DMARC, BIMI, MTA-STS, and TLS reporting records.

Check HSTS, CSP, X-Frame-Options, Referrer-Policy, and related browser security headers.

The checks beta users can run today, plus the next domain-risk signal on the roadmap.

See how many days remain before certificates expire.

Catch hostname mismatches and invalid certificate chains.

Check HTTPS response status, latency, redirects, and TLS failures.

Inspect A, AAAA, CNAME, MX, NS, and TXT records in one dashboard.

Store DNS snapshots and surface record changes over time.

Coming soon: domain renewal and expiration risk monitoring.

Built for teams and operators responsible for keeping websites online.

Developers maintaining client websitesAgencies managing multiple domainsIndie SaaS foundersE-commerce website owners