TLS/SSL Checker
Check a host's TLS connection status and evaluate security header configuration with a letter grade.
Try TLS/SSL Checker →What It Does
The TLS/SSL Checker connects to a host over HTTPS and verifies whether TLS is working. It evaluates security headers including HSTS configuration (max-age, includeSubDomains, preload), Content-Security-Policy, X-Frame-Options, and more. Results are presented with a pass/fail checklist and a letter grade.How to Use It
- Navigate to Diagnostics → TLS/SSL Checker from the top menu.
- Enter a hostname (e.g.,
example.com). - Click Check TLS or press Enter.
- View the security grade and pass/fail checklist.
- Use Copy All or Download .txt to export results.
Use Cases
- Certificate monitoring: Verify a site's TLS connection works.
- Security hardening: Check if HSTS is enabled with proper configuration.
- Pre-deployment check: Verify TLS and security headers before launching a site.
- Incident response: Quickly check if a site's TLS has expired or is misconfigured.