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Secure•100% Client-Side

Net Ssl Checker

Free tool — runs entirely in your browser.

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TLS / HTTPS Inspector

SSL Certificate Checker

Verify HTTPS encryption, SSL certificate status, and TLS security.

Calculator Guide & Math

1What is an SSL Certificate Checker?

The SSL Certificate Checker verifies HTTPS encryption support, TLS protocol standards, and HSTS security headers for any domain.

2Step-by-Step Usage Guide

You want to check if a website has active SSL encryption and HSTS headers.

  1. Enter domain name (e.g. google.com or cloudflare.com)
  2. Click "Check SSL" to execute TLS handshake inspection
  3. Review TLS protocol, certificate type, and HSTS security enforcement status
Result Summary: Active SSL certificate verification with protocol and security header breakdown.

Frequently Asked Questions

TLS (Transport Layer Security) encrypts web traffic between browsers and servers, enabling secure HTTPS.