Free Tool
🔒 SSL Server Test
Check your website's SSL certificate and TLS security configuration — free, no sign-up required
Powered by Qualys SSL Labs · First scan may take 1–2 minutes
What the SSL Labs Grades Mean
| Grade | Meaning | What to do |
|---|---|---|
| A+ | Excellent — HSTS enabled, TLS 1.3 support, no vulnerabilities | Nothing to do — perfect configuration |
| A | Very Good — solid SSL configuration | Enable HSTS to achieve A+ |
| B | Good — but some room for improvement | Usually caused by TLS 1.0/1.1 being enabled — disable them |
| C | Adequate — some security concerns | Review your cipher suites and enabled protocols |
| D / E | Significant issues — vulnerabilities that need attention | Update TLS config and disable insecure protocols |
| F | Failed — serious vulnerabilities or unusable certificate | Fix immediately — browsers will show security warnings to users |
| T | Trust Error — certificate not trusted by browsers | Use an SSL certificate from a trusted CA such as DigiCert or RapidSSL |
| M | Mismatch — certificate domain doesn't match the server | Reissue a certificate for the correct domain |
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