Website SSL/TLS Certificate & HTTPS Expiry Checker
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🔒 TLS Certificate Auditor
Domain SSL & HTTPS Expiry Checker
Inspect certificate expiration dates, verify issuing Certificate Authorities, and audit CAA protection records in real time.
Why Monitoring SSL Expiration & HTTPS Health is Critical
Secure Sockets Layer (SSL) and its modern successor, Transport Layer Security (TLS), establish encrypted connections between website visitors and web servers. Search engines like Google prioritize HTTPS-encrypted domains, while treating expired or invalid certificates as critical security vulnerabilities.
🛡️ 90-Day Certificate Life Cycles
Modern automated Certificate Authorities (such as Let's Encrypt and Google Trust Services) issue certificates with 90-day lifespans to enforce automated renewals and minimize stolen key risks.
🔑 Certificate Authority Authorization (CAA)
A specialized DNS resource record that lists explicitly authorized CAs allowed to issue certificates for your domain name, blocking rogue issuance.
⚡ HSTS Strict Transport Security
An HTTP response header informing browsers to interact exclusively over secure HTTPS channels, mitigating SSL-stripping man-in-the-middle attacks.
🔍 TLS 1.3 Encryption Standard
The latest cryptographic protocol offering enhanced handshake speeds (0-RTT) and modern cipher security compared to deprecated TLS 1.0/1.1 protocols.
Frequently Asked Questions
What happens when an SSL certificate expires? ▼
Web browsers immediately terminate direct navigation and display prominent 'Your connection is not private' (NET::ERR_CERT_DATE_INVALID) error warnings, preventing visitors from entering the site.
How do I set up automated SSL certificate renewals? ▼
Most modern hosting platforms (Cloudflare, cPanel, Vercel, Netlify) support automated ACME protocol renewals. For dedicated servers, Certbot daemon cron jobs handle background renewals 30 days prior to expiration.
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