HTTP Response Header Viewer
HTTP Headers viewer retrieves response headers through SSRF-safe controls so you can validate cache behavior, redirects, and security-relevant metadata.
π§ͺ Run this tool π Excessive Explanation β Frequently asked questions
π§ͺ Run this tool
π Excessive Explanation
𧩠Technical Details
What this tool checks
- Status line and header map for requested URL over allowed ports.
- Redirect chain behavior with per-hop validation controls.
- Header visibility needed for caching, policy, and edge debugging.
How to read the output
- Result Summary indicates whether header retrieval completed safely.
- Overview surfaces status, final URL, and key header presence.
- Technical Details captures redirect and header sequence context.
- Raw Output is useful for app/CDN coordination during incidents.
Common failure patterns
- Missing cache-control clarity causes inconsistent client behavior.
- Redirect chain introduces unexpected host or protocol transitions.
- Security-critical headers absent after proxy or CDN changes.
- Mixed origin/edge header policies lead to ambiguous output.
Remediation workflow
- Validate headers at both origin and edge delivery layers.
- Normalize redirect behavior and enforce canonical target design.
- Add explicit cache and security headers with tested defaults.
- Re-test after each deployment touching routing or reverse proxy.
Next steps
β Frequently asked questions
Why inspect raw headers instead of browser devtools only?
Server-side retrieval provides controlled, repeatable evidence outside local browser state.
Can redirects hide header problems?
Yes. Security or cache posture can degrade on intermediate hops.
Does this tool follow unlimited redirects?
No. Redirect depth is bounded for safety and abuse prevention.
Should I compare headers across regions?
Yes, especially when CDN policy may vary by edge location.
What check should follow header review?
Run TLS and protocol tests to validate transport-layer posture.