SSL/TLS Inspector

Analyze certificate chains and expiry dates instantly for any domain. Verify SSL/TLS configuration and ensure secure HTTPS connections.

Check SSL CertificateLearn More

Inspect SSL/TLS Certificates

Enter a domain name to analyze its SSL certificate, view the complete certificate chain, and check expiry dates.

Check Domain Security
Enter a domain to inspect its SSL/TLS certificateCheck certificate validity, expiry dates, and view the complete certificate chain for any domain.
What you'll see:
Certificate ValidityCheck if the certificate is currently valid and trusted
Expiry InformationSee when the certificate expires and days remaining
Certificate ChainView the complete trust chain from leaf to root certificate
Try these examples:
github.comgoogle.comcloudflare.com

Understanding SSL/TLS Certificates

Key components of SSL/TLS certificate security

Certificate Chain

The certificate chain links your SSL certificate to a trusted root CA. Each certificate validates the next, ensuring authenticity and trust.Example: Server Cert → Intermediate CA → Root CA

Expiry Date

SSL certificates have validity periods. Monitor expiry dates to renew before expiration and avoid browser security warnings.Typical validity: 90 days (Let's Encrypt) or 1 year

Certificate Details

View issuer information, subject alternative names (SANs), signature algorithm, and public key details for comprehensive security analysis.Includes: Issuer, SANs, Key Size, Signature Algorithm

Common Use Cases

Security Audits

Verify SSL/TLS configuration as part of security audits. Check certificate validity, chain completeness, and encryption strength.

Certificate Monitoring

Monitor certificate expiry dates to prevent unexpected expirations that cause HTTPS errors and browser warnings.

Troubleshooting HTTPS Issues

Diagnose SSL/TLS connection problems by inspecting certificate chains, identifying missing intermediates, or expired certificates.

Multi-Domain Verification

Verify SSL certificates across multiple domains and subdomains to ensure consistent HTTPS coverage and valid SANs.

Frequently Asked Questions

Common questions about SSL/TLS certificates

What is an SSL certificate?

An SSL certificate is a digital certificate that authenticates a website identity and enables encrypted connections. It ensures data transmitted between the web server and browser remains private.

How do I check if my SSL certificate is valid?

Use an SSL checker tool to verify certificate validity, expiry date, certificate chain, and issuer information. Valid certificates show a lock icon in browsers and use HTTPS.

What is a certificate chain?

A certificate chain is a sequence of certificates where each certificate is signed by the next certificate in the chain. It starts with your SSL certificate and ends with a trusted root certificate authority.

How often should I renew my SSL certificate?

Most SSL certificates are valid for 1 year (90 days for Let's Encrypt). Monitor expiry dates and renew before expiration to prevent browser warnings and maintain HTTPS security.