Security headers are critical for protecting your website and your users from common threats like clickjacking, XSS, and data injection. Our Security Headers Checker is a free online tool that helps you scan and analyze HTTP response headers implemented on your site.
With one click, you can evaluate security headers like:
Strict-Transport-Security (HSTS) – Ensures HTTPS-only access
Content-Security-Policy (CSP) – Controls resources the browser is allowed to load
X-Content-Type-Options – Prevents MIME-sniffing
X-Frame-Options – Protects against clickjacking
Referrer-Policy – Controls how much referrer information is sent
Permissions-Policy – Limits access to browser features
Get a clear grade and actionable recommendations to help secure your site quickly. Whether you're a developer, security researcher, or just want to audit your site, our tool gives you in-depth header analysis without installing anything.
HTTP security headers tell browsers how to behave when handling your site’s content. They can enforce HTTPS, block malicious scripts, prevent framing, and more — all by just configuring your server response.
Adding or fixing just a few lines of code can dramatically improve your security posture and prevent zero-day vulnerabilities.
Using our tool is incredibly simple and requires no registration or software installation. Just follow these steps:
🔗 Enter your website URL
Paste your domain (with or without https://) in the input field.
🚀 Click “Scan” or “Check Headers”
Our scanner will perform a real-time HTTP HEAD request to your server.
📊 View the detailed report
Instantly receive a full list of detected headers, their current values, and whether they are secure or missing.
🛠 Get improvement suggestions
We provide a clear grade (A-F) with highlighted advice for each missing or misconfigured header.
🔁 Repeat as needed
After implementing changes, scan again to confirm improvements.
✅ Real-time HTTP header scanning
✅ Support for major headers: Strict-Transport-Security, Content-Security-Policy, X-Frame-Options, etc.
✅ Instant security grading system (A to F)
✅ Detailed remediation tips for each header
✅ Completely free and no signup required
✅ Mobile-friendly and works across all devices
✅ Designed for developers, admins, and SEO professionals
Security headers are HTTP response headers that provide an extra layer of security by helping browsers make safer decisions when handling site content.
Yes! Our tool performs only read-only HTTP header requests. It does not store or change anything on your website.
No installation is required. Just open the website, enter your domain, and get a real-time analysis in seconds.
We scan for common and important headers like:
Strict-Transport-Security (HSTS)
Content-Security-Policy (CSP)
X-Frame-Options
X-Content-Type-Options
Referrer-Policy
Permissions-Policy
Absolutely. It’s great for auditing client sites before launch or during regular security reviews.
We provide suggestions along with examples for each missing or insecure header. Simply follow our advice and update your server configuration (e.g., Apache, Nginx, etc.).