Tools

HTTP Security Headers Diff Tool

Compare two header sets and highlight missing security headers.

HTTP Security Headers Diff Tool

Compare two sets of HTTP headers to identify security-related changes. This helps teams catch regressions after deployments or configuration updates.

How to use the HTTP Security Headers Diff Tool

  1. Paste the first header set.
  2. Paste the second header set.
  3. Click Compare to see differences.

Common use cases

  • Validating security headers across environments.
  • Reviewing changes after CDN or proxy updates.
  • Auditing release impact on headers.
  • Documenting security baseline shifts.

Tips & notes

  • Include only the response headers for best results.
  • Normalize header names if outputs look inconsistent.
  • Pair with CSP and CORS checks for deeper review.

Related security tools

  • HTTP Header Analyzer
  • CSP Header Tool
  • CORS Policy Risk Checker

FAQ

What format should I use?
One header per line in the form Name: value.
Is the comparison case-insensitive?
Yes. Header names are normalized to lowercase.
Does it evaluate header values?
It highlights differences but does not validate policy quality.