Security Tool

SSL Certificate Checker

Verify SSL/TLS certificate validity, check expiration dates, analyze certificate chains, and ensure your website's security configuration is properly set up.

What is an SSL Certificate?

An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates a website's identity and enables an encrypted connection. It's essential for:

Encryption - Protects data in transit
Authentication - Verifies website identity
Trust - Builds visitor confidence

This tool checks certificate validity, expiration, issuer, and the complete certificate chain to ensure your SSL is properly configured.

Check SSL Certificate
https://
Enter domain without http:// or https:// prefix

Checking SSL certificate...

Certificate Details
Subject (Domain)
Issuer
Valid From
Valid Until
Days Remaining
Serial Number
Signature Algorithm
Certificate Chain
Security Checks
Quick Tips
  • Renew certificates 30 days before expiry
  • Use certificates from trusted CAs
  • Ensure complete certificate chain
  • Use TLS 1.2 or higher
  • Enable HSTS for extra security
Common Issuers
Let's Encrypt DigiCert Sectigo GlobalSign GoDaddy Cloudflare