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© Nutter Toolsnutter.tools
  1. Home
  2. Web & auth
  3. Website security audit
Your files stay on your device

Website security audit

Grade pasted response headers plus DNS and email-auth records fetched over DoH with a published weighted score, severity-ordered findings, evidence, and per-server fixes.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

Report a problem

Paste a response header block, name the domain, and press Run security audit

The headers grade in this tab. The DNS, DMARC, and DNSSEC evidence comes back from the resolver you picked, and the published 1.0 methodology turns it all into one score.

This audit is honest about what a paste cannot show. There is no TLS handshake, so the Transport and TLS category never scores, and there is no page fetch, so third-party content never scores either. Those categories drop out and the remaining weights renormalize; the report says which did. Nothing behind authentication is checked, and no injection or access-control flaw can be found this way.

Audit input

Where the DNS and email records are looked up
Up to 20,000 characters, one "Name: value" row per line
DoH resolver

Audit only names you own or are authorized to review. The header block never leaves the tab; the DNS lookups are the only requests.

What leaves your browser

Your domain goes to the selected DoH resolver over HTTPS three times (TXT, DMARC, DNSKEY), and nowhere else. This page leaves your browser only when you press the button; never on load, never in the background. Nothing is sent anywhere else. Google Analytics still measures the visit to this page, and it never receives what you run through this tool.

More web & auth tools

  • HTTP header parser
  • Cookie analyzer
  • Live DNS lookup
  • CSP evaluator & builder
All web & auth tools

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