Security Headers Checker

Security Headers Analyzer

Scores the final response headers to quickly determine if HSTS, CSP, XFO, etc. are missing.

Check security response headers online, find the most commonly missed items first.

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Use Cases

  • Before site launch or after security remediation, run a security response header baseline check first
  • Identify missing or weakly configured security headers during security audits and view risk levels
  • Verify protection headers are active when troubleshooting clickjacking, XSS, content sniffing risks
  • Re-test response headers after security vulnerability remediation to confirm fixes and generate reports

How to Use

  1. Enter the full website URL to check
  2. Tool automatically requests and analyzes response headers for each security header configuration
  3. View each security header's status (present/missing), value content, and risk level
  4. Adjust server configuration based on results and re-check to confirm remediation

Features

  • See missing security headers immediately: No need to compare manually one by one
  • Remediation priority easier to set: Fix high-risk items first, then refine policies
  • Pre-launch review is practical: Dev self-testing, security checks, and release acceptance all benefit from running this first
  • Results collaboration-ready: Easy to sync issues with dev, ops, or security teams for follow-up

FAQ

Why do websites need security response header checks?

Security response headers help reduce risks like clickjacking, content sniffing, XSS, and downgrade attacks. They're one of the most commonly missed but worthwhile layers to add first.

Which security headers are most worth checking first?

Common high-frequency items include HSTS, CSP, X-Frame-Options, X-Content-Type-Options, and Referrer-Policy. The tool helps you quickly see if any are missing.

Is it suitable for pre-launch security self-checks?

Very suitable. Checking security response headers before launch helps discover configuration gaps early, avoiding obvious security shortcomings reaching production.

Can results help with security remediation?

Yes. After viewing missing items and existing header configurations, it's easier to prioritize fixes and continue improving with CSP, HSTS, SSL, and other tools.