What does the SSL security score mean?

The security score (0-100) evaluates your SSL/TLS configuration across multiple factors: certificate validity, protocol versions, cipher suite strength, and known vulnerabilities. An A+ score (90-100) means excellent security. Scores below C (60) indicate serious issues that should be addressed immediately.

What are Heartbleed, POODLE, FREAK, and DROWN vulnerabilities?

These are well-known SSL/TLS vulnerabilities. Heartbleed allows attackers to read server memory. POODLE exploits SSL 3.0 fallback. FREAK forces weak export-grade encryption. DROWN attacks servers supporting SSLv2. Our checker tests for all of these — if any are detected, follow the recommendations to patch your server.

What happens if my SSL certificate expires?

When your SSL certificate expires, browsers will display a security warning to visitors, stating the connection is not secure. Most users will immediately leave your site. Additionally, search engines may penalize your rankings, and some browsers may completely block access to your site.

What TLS versions should my server support?

Your server should support TLS 1.2 and TLS 1.3. TLS 1.3 is the latest standard with improved speed and security. TLS 1.0 and 1.1 are deprecated and should be disabled — they have known vulnerabilities. Our checker shows which protocol versions your server has enabled.

What does "certificate chain incomplete" mean?

A complete certificate chain includes your SSL certificate, intermediate certificates, and the root certificate. If intermediate certificates are missing, some browsers or systems may not trust your certificate. This is a server configuration issue that needs to be fixed by installing the full certificate chain.

How often should I check my SSL certificate?

We recommend checking your SSL certificate at least monthly, and especially after any server or hosting changes. With Let's Encrypt certificates (90-day validity), more frequent checks are advisable. For continuous monitoring, our service can alert you 30, 14, and 7 days before expiry.

All Tools

SSL Certificate Checker

Full SSL/TLS security analysis with grade scoring, vulnerability scanning, certificate chain validation, and protocol assessment.

Free tool • No signup required • Instant security report

What This Tool Analyzes

Security score with A-F grade rating

Vulnerability scan: Heartbleed, POODLE, FREAK, DROWN

Certificate chain validation and completeness check

TLS protocol version analysis (TLS 1.0-1.3)

Cipher suite strength assessment

Certificate expiry tracking with days remaining

Subject Alternative Names (SAN) verification

Actionable security recommendations

Why SSL Certificates Matter

Browser Trust: An expired or invalid SSL certificate triggers security warnings in all modern browsers. Chrome, Firefox, and Safari will display a full-page warning that most users won't bypass — they'll simply leave your site.

SEO Impact: Google uses HTTPS as a ranking signal. Sites with valid SSL certificates rank higher than those without. An expired certificate can hurt your search rankings.

Renewal Reminders: Most certificates expire every 90 days (Let's Encrypt) or annually. Auto-renewal can fail silently when payment methods expire or DNS changes. Regular monitoring ensures you never miss a renewal.

Frequently Asked Questions

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Related Tools & Features

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