Staging vs Production — Header Diff

Enter two URLs to compare their HTTP response headers side by side. Missing security headers, different Cache-Control values, and CORS differences are highlighted automatically.

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🔒HeadersFixer
Scan security headers and get stack-specific fixes
📊Security Headers Scorer
Score your headers 0-100 with per-header breakdown
📋Pre-Launch Checklist
20 HTTP checks before you ship
Done with this tool?
20 HTTP checks before you ship — security, CORS, cache, redirects, staging.
Pre-Launch Checklist →