SSL Certificate Checker - SSL Test & Security Audit Free

How to Use the SSL Checker

1. Enter a domain — type the domain name you want to check (e.g., freetoolz.in or example.com) — no https:// prefix needed
2. Click any SSL tool link — each button opens a comprehensive SSL analysis report on a trusted third-party service in a new tab
3. Or use the OpenSSL command — copy the ready-to-run OpenSSL command and paste it in your terminal for direct certificate inspection
4. Review the results — each tool provides different insights: certificate chain, cipher suites, protocol support, and security headers

Features

• 8 SSL testing services — quick links to SSL Labs, SSL Shopper, SSL Trust, DNS Checker, ImmuniWeb, Hardenize, and more
• OpenSSL command generator — automatically generates the correct OpenSSL command for your domain with one-click copy
• One-click copy — copy the OpenSSL command or any tool URL to clipboard instantly
• Comprehensive analysis — each linked tool covers certificate chain validation, cipher suite support, protocol versions (TLS 1.2, 1.3), and security header configuration
• Quick domain entry — remembers your domain across all linked tools so you don’t retype it

Use Cases

• Pre-deployment check — verify your SSL certificate is properly installed before launching a new site
• Expiry monitoring — check how many days remain before your certificate expires across multiple tools
• Security audit — run a full SSL/TLS security assessment using SSL Labs’ graded report
• Mixed content debugging — use Hardenize or ImmuniWeb to find pages loading insecure resources over HTTPS
• Certificate chain validation — identify missing intermediate certificates that cause browser warnings

FAQ

How often should I check my SSL certificate?

Check at least monthly, and definitely before and after any certificate renewal. Set a reminder 30 days before expiry to avoid lapses. Some tools on this page offer automated monitoring.

What does an SSL Labs grade mean?

SSL Labs grades range from A+ (excellent) to F (failed). An A grade requires strong cipher suites, TLS 1.2 or higher, no security vulnerabilities, and proper certificate chain. Aim for at least an A, and A+ if you implement HSTS.

What’s the OpenSSL command checking?

The generated command connects to your server and displays the full certificate details, including issuer, validity dates, subject alternative names (SANs), and the complete certificate chain. It’s the most direct way to inspect a certificate.

Can I check SSL for a specific port?

Yes. SSL Labs and some other tools allow port-specific checks. The OpenSSL command generator can be modified with -port parameter to check non-standard ports (e.g., 8443, 993 for IMAPS).

Tips

• Aim for an A or A+ rating on SSL Labs — it’s the industry standard for SSL security
• Use the OpenSSL command when you need certificate details immediately without waiting for a web tool
• Check your certificate on both www. and non-www. versions of your domain — they may have different certificates
• Enable HSTS (HTTP Strict Transport Security) after confirming your SSL setup is correct to prevent downgrade attacks