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TLS 1.3 & EXPIRY COUNTDOWN • ZERO FRICTION

Free SSL Certificate Checker & Expiry Inspector

Check SSL/TLS certificate validity, issuing authority, expiry countdown, and cipher configuration to eliminate security errors.

SSL / TLS Certificate Inspector

Test HTTPS connectivity, inspect SSL/TLS certificate authority, expiration date, and SAN hostnames.

Why SSL Health & Expiry Monitoring is Critical for Agencies

Avoid Client Revenue Loss

An unexpected certificate expiration triggers immediate browser interstitial warnings, drops paid ad campaigns, and halts e-commerce transactions instantly.

Protect SEO Rankings

HTTPS is a confirmed Google core ranking signal. Crawlers encountering SSL errors will fail indexing passes and reduce search visibility.

Frequently Asked Questions About SSL Certificates

Why do SSL certificates expire every 90 to 398 days?+
Industry standards established by the CA/Browser Forum strictly cap public SSL certificate lifespans at 398 days, with automated providers like Let's Encrypt capping at 90 days. Shorter lifespans reduce the window of vulnerability if a private key is compromised and encourage automated renewal workflows.
What happens when an SSL certificate expires on a client website?+
Web browsers (Chrome, Safari, Firefox, Edge) block visitors with a full-screen "Your connection is not private" (NET::ERR_CERT_DATE_INVALID) security warning, destroying user trust and dropping conversion rates to zero.
What is TLS 1.3 and why should older protocols be disabled?+
TLS 1.3 is the modern cryptographic transport protocol providing zero-round-trip time (0-RTT) handshakes and removing vulnerable legacy ciphers. Deprecated protocols like SSLv3, TLS 1.0, and TLS 1.1 are prone to exploits (POODLE, BEAST) and fail PCI-DSS compliance.
What is a CAA DNS record and how does it prevent rogue certificates?+
A CAA (Certificate Authority Authorization, RFC 6844) record specifies which CAs are permitted to issue certificates for your domain. If someone attempts to issue a certificate from an unauthorized CA, the CA must refuse issuance.

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