11 TLS/SSL Checks
Free SSL Certificate Checker
Verify your SSL/TLS certificate configuration, check expiration, TLS version, cipher suites, and HSTS settings. Get instant results with actionable fix guidance.
Results in under 60 seconds
What We Check
Certificate expiration monitoring
TLS 1.2/1.3 version verification
Cipher suite strength analysis
Certificate chain validation
Mixed content detection
HSTS & preload readiness check
How It Works
1
Enter your website URL in the scanner above
2
We establish a secure connection and analyze your SSL certificate
3
TLS handshake is tested for version support and cipher strength
4
Certificate chain is validated for completeness and trust
5
You get a detailed report with actionable fix recommendations
Security Checks Included
This scanner runs the following SSL/TLS security checks
Frequently Asked Questions
What does this SSL checker test?
Our SSL checker verifies your certificate expiry, TLS version (1.2/1.3), cipher suite strength, certificate chain trust, mixed content issues, HSTS configuration, and OCSP stapling. It covers 11 checks across your entire TLS/HTTPS setup.
What TLS version should my site use?
You should support TLS 1.2 and TLS 1.3 while disabling older versions (TLS 1.0, 1.1, and all SSL versions). TLS 1.3 offers the best security and performance with faster handshakes.
How often should I check my SSL certificate?
We recommend checking monthly. Certificates typically last 90 days (Let's Encrypt) to 1 year. Expired certificates cause browser warnings that drive away visitors.
Is this SSL checker free?
Yes, all SSL/TLS checks including Certificate Chain validation and OCSP Stapling are included in every free scan. Upgrade to get continuous monitoring with automatic alerts when your certificate is about to expire.
Want the Full Security Picture?
SSL is just the start. Run a full 54-check security audit covering headers, vulnerabilities, DNS, and more.
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