Tools

HTTP Header Analyzer for Cache, CORS, Security

Analyze HTTP response headers to spot common gaps and misconfigurations.

HTTP Header Analyzer

Review response headers and identify missing or weak defaults quickly. This helps teams validate caching rules, CORS behavior, and basic security headers.

How to use the HTTP Header Analyzer

  1. Paste the response headers.
  2. Click Analyze.
  3. Review the findings.

Common use cases

  • Auditing security headers before release.
  • Checking CORS configuration for APIs.
  • Verifying cache behavior in production.
  • Troubleshooting inconsistent header values.

Tips & notes

  • Provide full headers for the best signal.
  • Validate changes in your browser or curl after updates.
  • Use consistent header casing for readability.

Related developer tools

  • HTTP Status Code Explainer
  • cURL Converter
  • Request Replay Tool

FAQ

Does it validate all headers?
Checks common cache, CORS, and security headers.
Can I paste full responses?
Yes. It will focus on the header section.
Is this a security scan?
No. It highlights common header issues only.