🔐 Web Security Tools

Fifteen tools for SSL certificates, security headers, DNSSEC and domain validation — plus offline builders for CSP, HSTS, CORS and Permissions-Policy headers, security.txt, and .htaccess/Nginx config snippets.

🔐 Security Headers Checker

Analyze HTTP security headers on any website.

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🔒 TLS Version Checker

Check TLS/SSL version support.

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📜 Certificate Chain Viewer

View SSL certificate chain details.

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🛡️ DNSSEC Checker

Validate DNSSEC configuration.

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📅 Domain Expiry Checker

Check domain registration expiry dates.

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⚡ Website Status Checker

Check if website is online.

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🚫 Blacklist Check

Check if IP is blacklisted.

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🛡️ CSP Builder

Build a Content-Security-Policy header string.

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🔐 HSTS Header Builder

Build a Strict-Transport-Security header.

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🌐 CORS Header Builder

Build Access-Control-Allow-* response headers.

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🧭 Permissions-Policy Builder

Choose which browser features to allow or block.

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🧾 Referrer-Policy Selector

Compare Referrer-Policy values side by side.

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📄 Security.txt Generator

Build an RFC 9116 security.txt vulnerability contact file.

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🗂️ .htaccess Security Snippet Generator

Generate common Apache security config snippets.

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🧱 Nginx Security Headers Generator

Generate a security headers snippet for Nginx.

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