SSL Certificate Viewer - Free Online Tool | PivaBox

Check SSL/TLS certificate status for any domain — HTTPS verification, security headers, HSTS, CT logs, and openssl command generation

How to Use SSL Certificate Viewer

1. Enter a domain URL (e.g., example.com) in the input field and click Check to initiate a HEAD request over HTTPS
2. Review the Connection results: HTTPS status, HTTP status code, TLS/protocol info (from Performance API if available), and response time. Check the Security Headers section for HSTS, CSP, X-Frame-Options, and other security-related response headers with pass/warn/fail grades
3. For complete certificate details (issuer, validity dates, SANs, key size), copy the generated openssl command and run it in your terminal, or click the SSL Labs link for a comprehensive online analysis

Frequently Asked Questions

Is SSL Certificate Viewer free?

Yes, PivaBox SSL Certificate Viewer is completely free to use. There are no charges, subscriptions, or hidden fees.

Why can't I see the full certificate details?

Web browsers do not expose the full X.509 certificate chain via JavaScript for security and privacy reasons. The Web Security API only reveals whether a connection is secure and basic protocol information. For full certificate details (issuer, expiry, SANs, public key), you need to use a command-line tool like openssl or an online service like SSL Labs.

What security headers are checked?

The tool checks for 8 critical security headers: Strict-Transport-Security (HSTS), Content-Security-Policy (CSP), X-Content-Type-Options, X-Frame-Options, X-XSS-Protection, Referrer-Policy, Expect-CT, and Cross-Origin-Opener-Policy. Each header is rated as pass (present and properly configured), warn (present but may need tuning), or fail (missing). A security score percentage is calculated based on how many headers are present.