Free Tools

Website Security Tools

Check how well a website protects its visitors. The headers grader sends only the URL you enter to our server, which fetches that site's response headers and grades them. Nothing you enter is stored.

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Grade Your Website's Defenses

Run a real check against any public site and get plain-language results with remediation steps.

HTTP Security Headers Grader

Grade any site's HTTP response headers from A to F with per-header explanations and remediation guidance.

  • HSTS, CSP, X-Frame-Options, and more
  • Flags information-leaking headers
  • Letter grade with fix-it steps
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How Your Data Is Handled

The headers grader sends only the URL you enter to our server check. No results are logged and nothing you enter is stored.

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