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HTTP Headers Checker

Inspect and analyze HTTP response headers for any URL with security and performance insights

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About This Tool

The HTTP Headers Checker fetches and analyzes HTTP response headers for any URL, checking for security headers like Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options. It provides a weighted security score and actionable recommendations, and also supports pasting raw headers for analysis when direct URL fetching is blocked by CORS.

Key Features

Quick Preview

Use Cases

http headers security csp cors

Frequently Asked Questions

What is the HTTP Headers Checker?

The HTTP Headers Checker fetches and analyzes HTTP response headers for any URL. It checks for security headers like CSP, HSTS, and X-Frame-Options, and provides a security score with recommendations.

What security headers does it check?

It checks Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Strict-Transport-Security, Referrer-Policy, Permissions-Policy, X-XSS-Protection, Cross-Origin-Opener-Policy, and Cross-Origin-Resource-Policy.

Can I check headers without a URL?

Yes. You can paste raw HTTP headers directly into the tool and click Analyze Pasted Headers to get the same security analysis and scoring.

Is my data safe?

Yes. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.

Can I use this tool on mobile devices?

Yes. The HTTP Headers Checker is fully responsive and works on all devices including smartphones, tablets, and desktop computers.