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Feature · 2026

SSL monitoring that warns you before the certificate expires

UptimePad includes SSL certificate monitoring on every plan, including the free tier. It inspects each certificate on your schedule, tracks the issuer, chain, and hostname match, and warns you days before a certificate expires, so a lapsed cert never takes your site offline or throws a browser security warning at your customers.

Last updated
SSL monitoring is included on every UptimePad plan, including Free
ToolSSL monitoringExpiry warning windowFastest checkStatus pagesMonthly price
UptimePad Free
No card, commercial use allowed
Configurable days ahead5 min1 public$0
UptimePad StarterConfigurable1 min1 custom domain$12
UptimePad ProConfigurable1 min3 pages$39
UptimePad ScaleConfigurable30 sec5 pages$99

What SSL monitoring checks

  • Expiry date and days remaining, so you get a warning with time to act instead of a 3 a.m. outage.
  • Issuer and certificate authority, so an unexpected change in who signed your cert is visible.
  • Hostname and SAN match, so a certificate that no longer covers the host it is serving is flagged.
  • Chain validity and signature algorithm, so a broken intermediate or a weak algorithm does not slip through.

Why certificates still expire in 2026

Most teams have auto-renewal, and most of the time it works. Expiries still happen because automation fails quietly: an ACME renewal that broke after a server change, a certificate on a box that is outside your automation, an expiring intermediate in the chain, a load balancer holding an old cert, or a vendor-managed certificate nobody owns. SSL monitoring is the backstop that does not assume the renewal worked. It checks the certificate that is actually being served and tells you the truth.

How UptimePad monitors SSL

On each check, UptimePad performs a real TLS handshake to the host, reads the certificate being served, and compares the expiry against your warning window. When the certificate is inside that window, or the handshake fails, or the hostname no longer matches, you get an alert on Email, Slack, Discord, Telegram, Microsoft Teams, PagerDuty, OpsGenie, a signed webhook, or Web Push, depending on your plan. SSL rides on the same monitor as your uptime and DNS checks, so one timeline shows the certificate state next to the request that failed.

Free SSL checker vs continuous SSL monitoring

For a one-off look, the free SSL checker reports the issuer, expiry date, days remaining, hostname match, and signature algorithm for any host with no signup. SSL monitoring is the continuous version: it runs that inspection on a schedule and alerts you as the expiry approaches. It is on the free plan, the same plan that includes DNS monitoring and 10 uptime monitors, with no credit card.

FAQ

Is SSL monitoring free?+

Yes. SSL certificate monitoring is on the UptimePad Free plan, with no credit card and commercial use allowed, alongside DNS monitoring and 10 uptime monitors. Many uptime tools put SSL behind a paid tier; UptimePad does not.

How early will I be warned before a certificate expires?+

You choose the warning window. UptimePad alerts you a configurable number of days before expiry, so you get the notice with enough lead time to renew rather than a surprise outage on expiry day.

What does UptimePad check on a certificate?+

Expiry date and days remaining, the issuer, chain validity, the hostname and SAN match, and the signature algorithm. It performs a real TLS handshake to read the certificate actually being served, rather than trusting that renewal automation succeeded.

Does SSL monitoring catch a broken auto-renewal?+

Yes. That is the main reason it exists. Because it inspects the live certificate on every check, it catches a renewal that silently failed, a certificate on a server outside your automation, or an expiring intermediate in the chain.

How often does UptimePad check the certificate?+

On the same cadence as the monitor: as fast as every 30 seconds on Scale, every minute on Starter and Pro, and every 5 minutes on Free.

Can I monitor SSL on an internal or non-standard port?+

UptimePad monitors certificates served over HTTPS on the hosts you add. You can point it at the host and port serving the certificate, and it will handshake and inspect what is presented there.

Never miss a certificate expiry again

Add your domain and turn on SSL monitoring alongside DNS and uptime checks. Free plan, no credit card, commercial use allowed.

Start monitoring free