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SSL Checker

Check any server's SSL/TLS certificate, chain of trust, protocol, and expiration status.

1 Hostname

2 Connect

3 Inspect

Enter Hostname

How It Works

1

Enter Hostname

Type the domain or server address

2

TLS Handshake

We connect to port 443 and retrieve the certificate chain

3

Inspect

View certificate details, chain, protocol, and expiration

What It Checks

Certificate subject, issuer, and SANs
Expiration date and days remaining
Full chain of trust (leaf, intermediate, root)
TLS protocol version and cipher suite
Public key algorithm and strength

Common Issues Detected

• Expired or not-yet-valid certificates
• Missing intermediate certificates
• Self-signed certificates in production
• Weak key sizes or outdated protocols

Related tools

Certificate Decoder

Inspect certificate details

Key Matcher

Verify cert & key match

SSL Generator

Generate self-signed certs