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Bulk HTTP Header Check

Paste up to 50 URLs and we'll fetch the response headers for each. Perfect for auditing security headers, cache policies, server signatures, and CDN behaviour across an entire site at once.

0 URLs detected.

Why response headers matter

  • Security posture: HSTS, CSP, X-Frame-Options and friends are the cheapest defences against the most common web attacks.
  • Cache & CDN behaviour: Cache-Control, CDN-Cache-Control, and Age tell you whether your assets are actually being cached.
  • Server fingerprint: leaked Server or X-Powered-By headers reveal your stack to attackers.
  • Content-Type drift: silent mismatches (e.g. JSON served as text/plain) break front-end clients.

Security-header chips

For each URL we highlight 9 standard security headers (green chips for present, grey chips for missing). Filter by typing in the search box (e.g. "cache", "security", "content").

Each URL is fetched once with a HEAD request (no body, no JS execution). URLs pointing to internal/private IPs are blocked. Max 50 URLs per request.

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