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HTTP Security Checker

Run an HTTP security probe on a live URL — reachability, redirect chain, and visible response details, plus a reference checklist for HSTS, X-Frame-Options, and CSP. Uses cloud-based processing.

Cloud AI Browser Native

How to Use the HTTP Security Checker

1. Enter the live URL

Full https:// address — the probe follows the real redirect chain.

2. Read reachability and the reference list

Reachable status, final URL, status and content-type when visible — plus a static reference checklist. Nothing is graded.

3. Fix server-side

Add the missing headers in your server config, then re-probe to confirm.

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Frequently Asked Questions

Which headers?

CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

How does the grading work?

No grading — the tool reports reachability, final URL, and any visible status/content-type, with the header list as an ungraded reference. Verify headers server-side with curl -sI.

Why can't headers read cross-origin?

Browsers hide security headers cross-origin unless CORS-exposed — the probe runs in your browser, so header values must be checked server-side.

Are security checks stored anywhere?

No account needed — checks run without sign-in or saved history.

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Last updated October 2026