Free SSL Certificate Checker & TLS Grader
Grade any site's SSL certificate and TLS configuration
Frequently Asked Questions
What does the SSL grader check?
It checks your SSL/TLS certificate validity, expiration date, protocol versions (TLS 1.2/1.3), cipher suite strength, and known vulnerabilities like POODLE, BEAST, and Heartbleed.
What is a good SSL grade?
An A or A+ grade means your SSL configuration follows best practices. Anything below B indicates security issues that should be addressed.
How do I fix a bad SSL grade?
Common fixes include upgrading to TLS 1.3, disabling weak cipher suites, enabling HSTS, and renewing expired certificates. The scan results include specific recommendations.
Is the SSL checker free?
Yes, completely free with up to 3 scans per day. No signup required.
For authorized, legal, and ethical security testing only. Scans are rate-limited to 3 per day on the free tier.