SSL Certificate Checker
Verify your SSL certificate's trust, expiry, and configuration.
Verify your SSL certificate's trust, expiry, and configuration.
An expired or misconfigured SSL certificate breaks trust instantly. Browsers show security warnings, search engines drop rankings, and users leave. The worst part is that certificate issues often go unnoticed until a customer reports them or traffic drops.
This free tool connects to your server, inspects the TLS handshake, and analyzes the full certificate chain. You get a clear picture of trust status, expiry timeline, encryption strength, and transparency compliance - all in one check.
Shows exactly when your certificate expires and how many days remain, color-coded by urgency.
Verifies the full certificate chain against browser trust stores, checks for self-signed certificates.
Reports the TLS version, cipher suite, key algorithm and size used in the connection.
Checks for Certificate Transparency SCTs and OCSP stapling - both important for modern browser compatibility.
SSL certificates expire on a fixed schedule, but renewals can fail silently - an automation glitch, a DNS change, or a provider issue. Continuous monitoring checks your certificate every few minutes and alerts you days before expiry, giving you time to renew without downtime.
Sentinelboard monitors SSL certificate health automatically, tracking trust status, chain validity, and days until expiry. Get alerts via email, Slack, Telegram, or webhooks when your certificate needs attention.