Security Headers Analyzer

Check a website's security posture by analyzing its HTTP security response headers. Get a security score and recommendations.

How Security Headers Work

Understand the layers of web security

When your browser connects to a website, the server responds with HTTP security headers that instruct the browser how to behave. These headers are the first line of defense against common web attacks like XSS, clickjacking, and data injection.

Each security header serves a specific purpose. For example, Content-Security-Policy controls which resources can load, while Strict-Transport-Security enforces encrypted HTTPS connections. Our analyzer checks for the presence and correct configuration of these critical headers.

  1. 01

    Receive the response

    The tool reads response headers from the target URL; it does not inspect source code or every application vulnerability.

  2. 02

    Classify the finding

    Checks are shown as appropriate, review, or not found. Not found does not always mean a vulnerability.

  3. 03

    Verify the fix

    Apply a recommendation, run the check again, and interpret it in your own context.