SSL/TLS Certificate Checker
Verify SSL/TLS certificates, check expiry dates, analyze security configurations, and validate certificate chains.
Verify SSL/TLS certificates, check expiry dates, analyze security configurations, and validate certificate chains for any domain.
Check SSL Certificate
Enter a domain name to analyze its SSL/TLS certificate and security configuration
Real SSL Certificate Analysis: This tool performs actual SSL/TLS certificate validation by establishing secure connections to the target domain and analyzing the certificate chain. Results include real certificate details, security assessments, and expiration warnings.
How to Use SSL/TLS Checker
What It Checks
- Certificate validity and trust chain
- Expiration dates and renewal status
- Supported TLS protocols and cipher suites
- Security headers (HSTS, OCSP)
- Certificate issuer and subject information
- Subject Alternative Names (SANs)
Security Grades
- A+: Perfect configuration with all best practices
- A: Strong security, minor improvements possible
- B: Adequate security, some weaknesses
- C-F: Security issues requiring attention
Common Use Cases
For Website Owners
- Monitor certificate expiration dates
- Verify SSL installation and configuration
- Check for security warnings and issues
- Validate certificate chain integrity
For Security Audits
- Assess TLS protocol support
- Review cipher suite configurations
- Verify HSTS and security headers
- Check certificate authority trust
About This Tool
This tool processes all data locally in your browser for maximum privacy and security. No data is sent to any server.