SSL Certificate Monitoring

Get alerted before your SSL certificate expires.

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SSL certificate monitoring checks your certificate's expiry date, chain validity, and issuer. An expired or broken SSL certificate causes browser warnings that drive visitors away instantly.

How it works

Uptrue connects to port 443 and retrieves the TLS certificate. It checks the expiry date, validates the certificate chain, and detects self-signed or incomplete chain configurations.

What Uptrue checks

Days until expiry

Certificate chain validity

Issuer authority

Self-signed detection

HSTS presence

Alert conditions

Certificate expires in under 30 days (warning)

Certificate expires in under 7 days (critical)

Chain validation failure

Certificate already expired

Why this matters

Search engines penalise sites with invalid SSL. Browsers show full-page warnings. Auto-renewal tools fail silently — monitoring catches it before your users do.

Set up in 60 seconds

Free plan · 3 monitors · No credit card required

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Got questions?

Frequently asked questions

Everything you need to know about Uptrue — no fluff.

How far in advance do you warn about expiry?

We alert at 30 days (warning) and again at 7 days (critical), giving you time to renew.

Can you detect chain issues?

Yes. Uptrue checks the full certificate chain and alerts if intermediate certificates are missing.

Related Monitor Types

Ready to set up SSL Certificate Monitoring?

Join teams who monitor their infrastructure with Uptrue. Free plan, no credit card required. Want to spot-check first? Run our free SSL certificate checker.

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