SSL Checker - Free Online Tool | PivaBox

Check SSL/TLS configuration for any domain — verify HTTPS, HTTP redirect, and HSTS headers

How to Use SSL Checker

1. Enter a domain name (e.g. example.com) in the input field — the tool will automatically strip protocol and path
2. Click Check SSL to perform client-side analysis — the tool fetches the domain over HTTPS and HTTP to evaluate security posture
3. Review the SSL Grade (A-F) and individual check results — HTTPS reachable, HTTP-to-HTTPS redirect, and HSTS header presence

Frequently Asked Questions

Is SSL Checker free?

Yes, PivaBox SSL Checker is completely free to use. There are no charges, subscriptions, or hidden fees. All checks run in your browser.

Can this tool inspect SSL certificates?

No. Browser security restrictions prevent JavaScript from accessing raw SSL certificate details (validity dates, issuer, TLS version). This tool checks HTTP-level indicators: HTTPS reachability, HTTP-to-HTTPS redirect behavior, and HSTS header presence. For full certificate inspection use <code>openssl s_client -connect</code> on the command line.

What does the SSL Grade mean?

The grade is based on 3 checks: <strong>HTTPS Reachable</strong> (the site serves content over HTTPS), <strong>HTTP-to-HTTPS Redirect</strong> (visitors on HTTP are automatically redirected to HTTPS), and <strong>HSTS Header</strong> (the Strict-Transport-Security header instructs browsers to always use HTTPS). Grade A means all 3 pass. Grade F means none pass.