100% Free • Instant Checks

SSL Certificate Checker
Verify HTTPS Security

Check SSL/TLS certificates for any domain. Verify certificate validity, check expiration dates, and get OpenSSL commands for detailed inspection.Ensure your website is secure with valid SSL certificates.

Check SSL CertificateSee Features
Instant Checks
SSL Providers List
OpenSSL Commands
Best Practices

Check SSL Certificate

Note: This is a basic client-side check. For detailed certificate information, use the OpenSSL commands below.

SSL Certificate Providers

Let's Encrypt
Free • Wildcard Support
Free
Cloudflare
Free • Wildcard Support
Free
ZeroSSL
Free • No Wildcard
Free
DigiCert
Paid • Wildcard Support
Sectigo
Paid • Wildcard Support

OpenSSL Commands

Check SSL with OpenSSL
openssl s_client -connect example.com:443 -servername example.com
View Certificate Details
openssl x509 -in certificate.crt -text -noout
Check Expiration Date
echo | openssl s_client -servername example.com -connect example.com:443 2>/dev/null | openssl x509 -noout -dates
Test SSL Configuration
curl -vI https://example.com 2>&1 | grep -i ssl

Best Practices

  • Use SSL/TLS certificates from trusted Certificate Authorities
  • Enable HTTPS for all pages, not just login/checkout
  • Use HSTS (HTTP Strict Transport Security) header
  • Set up auto-renewal for Let's Encrypt certificates
  • Use strong cipher suites (TLS 1.2 or higher)
  • Monitor certificate expiration dates (renew 30 days before)
  • Use CAA DNS records to prevent unauthorized certificate issuance
  • Enable OCSP stapling for better performance
  • Redirect all HTTP traffic to HTTPS
  • Test your SSL configuration with SSL Labs

Powerful Features

Everything you need to verify SSL certificates

Instant Verification

Quick SSL certificate checks to verify HTTPS is working correctly on your domain.

SSL Providers

Compare free and paid SSL certificate providers including Let's Encrypt and Cloudflare.

Security Best Practices

Learn best practices for SSL/TLS configuration, HSTS, and certificate management.

Deploy with Free SSL

Use Server Compass to deploy applications with automatic Let's Encrypt SSL certificates.

Try Server Compass