SSL Checker – Free Online SSL Certificate Analyzer

Check SSL certificate expiry, issuer, SANs, chain hierarchy, TLS version, and server configuration. Fast, accurate and privacy-safe — no data stored.

Check SSL

Do not include protocol (https://) or path. Only hostname or hostname:port.
Scan status:
0%
A
Secure

Chain Hierarchy

Raw backend status:
Checked at:

This SSL Checker verifies your live SSL certificate and shows expiry date, certificate chain, subject information, SANs, TLS configuration and server response. It works with any domain, including subdomains and custom ports (example: domain.com:8443).

No data is stored — scanning is done only to retrieve certificate information and then discarded.

How to use

  1. Enter your domain (example: vinar.tech)
  2. Click “Check SSL”
  3. Wait for the SSL scan to complete
  4. View expiry date, server info, chain, SANs, protocol & grade
  5. Export your SSL report as TXT or JSON

About This SSL Checker

The SSL Checker analyzes the live certificate deployed on your server. It helps webmaster, developers and security teams verify expiry dates, certificate issuer, chain hierarchy and TLS configuration.

What This Tool Checks

  • Certificate Expiry & Validity
  • Issuer & Signature Algorithm
  • SANs (Subject Alternative Names)
  • TLS Protocol & Cipher Suite
  • Chain hierarchy (Root → Intermediate → Leaf)
  • Server type & IP address

Use Cases

  • Check if SSL certificate is expiring soon
  • Verify domain SAN coverage (www / non-www)
  • Validate correct chain installation
  • Test TLS protocol support
  • Security audits and server troubleshooting

More SSL tools: CSR GeneratorCSR DecoderSSL Tools Suite

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Frequently Asked Questions

Yes. VINAR TECH SSL Checker is completely free with no login or usage limits.

No. The tool does not store domains, certificates, IPs, or scan results. The backend fetches the certificate in real-time and returns the result immediately without logging or saving any data.

The tool displays expiry date, issuer, server IP, certificate chain, SAN (Subject Alternative Names), supported protocols (TLS versions), and overall SSL grade based on security checks.

A low security grade may occur due to weak ciphers, expired certificates, missing intermediate chain, outdated TLS versions, or hostname mismatch. Fixing these issues will improve your SSL score.

Yes. Wildcard certificates (like *.example.com) and SAN certificates with multiple domains are fully supported and displayed in the results.

The tool will flag the certificate as expired, self-signed, misconfigured, or hostname-mismatched and highlight the exact issue. You can also export the full JSON report for debugging.

Yes. You can export the full scan result as JSON or TXT, or copy the complete report to clipboard for analysis or sharing.
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Security Tips
  • Never share your private key.
  • Store private keys offline or in a secure vault.
  • Use DNS-01 validation for wildcard certificates.