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Free Website Security Tools

Genuinely working, single-purpose checks that run on FortifyNet's real scan engine. No login, no fluff.

MX Lookup & Email Security Checker

See MX records plus SPF, DMARC and DKIM for any domain, with a plain-language verdict for each.

Security Headers Checker

Grade a site's HTTP security headers (CSP, HSTS, X-Frame-Options and more) with a one-line fix for each gap.

DMARC Checker

Parse a domain's DMARC record (policy, pct, rua, alignment) and find out if its email is really protected.

Get your full website security grade in 60 seconds →

One free scan covers SSL, DNS, email auth, headers, performance and dark-web exposure.

Related guides
DMARC explainedSecurity headers guideDNS security basicsSSL/TLS best practices
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