Security Headers Validator

About this tool

The XploreNetHub Security Headers Validator analyzes the HTTP headers of any website and evaluates its level of protection against common attacks.

It checks essential headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options and Referrer-Policy.

You get a clear diagnosis of what is present, what is missing and how to improve your site's security posture.

How to use

  1. Enter the URL of the site you want to analyze.
  2. Click to check the security headers.
  3. See which headers are present and which are missing.
  4. Apply the recommendations to strengthen the site's security.

Use cases

  • Audit a site's security before or after a deploy.
  • Verify compliance with web security best practices.
  • Identify missing headers that increase attack risk.
  • Support security reviews and hardening reports.

Frequently asked questions

What are HTTP security headers?

They are headers sent by the server that instruct the browser to apply protection policies, helping mitigate attacks such as XSS, clickjacking and content injection.

What is the Content-Security-Policy (CSP) header?

CSP defines which content sources the browser may load and is one of the most effective defenses against cross-site scripting (XSS) attacks.

What is HSTS for?

Strict-Transport-Security (HSTS) forces the browser to always use HTTPS for the domain, protecting against downgrade and interception attacks.

What does X-Frame-Options do?

It controls whether the site can be displayed inside iframes, helping prevent clickjacking attacks.

Is the headers validator free?

Yes. The XploreNetHub Security Headers Validator is free and requires no sign-up.