Free Security Headers Checker

Analyze your website's HTTP security headers and get actionable recommendations.

HTTP Header Scanner

Analyze security headers of any website

Supports http/https, wildcards and redirects

What are HTTP Security Headers?

HTTP security headers are response headers that instruct web browsers on how to handle your website's content securely, preventing common vulnerabilities and protecting user data.

How Our Security Scoring Works

Our checker analyzes 12 critical HTTP security headers including CSP, HSTS, X-Frame-Options, COOP/COEP/CORP, and more, providing actionable recommendations to improve your security posture.

Why Security Headers Matter for Your Website

Implementing proper HTTP security headers prevents common vulnerabilities, protects user data, improves SEO rankings, and builds trust with your visitors.

🔐 What are HTTP Security Headers?

HTTP security headers are response headers that instruct web browsers on how to handle your website's content securely. They provide essential protection against common web vulnerabilities including Cross-Site Scripting (XSS), clickjacking, code injection, and man-in-the-middle attacks.

📊 How Our Security Scoring Works

Our free security headers checker analyzes 12 critical HTTP security headers including Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), X-Frame-Options, and more. Each missing or misconfigured header reduces your overall security score. An A grade (90+) indicates excellent web security configuration.

🚀 Why Security Headers Matter for Your Website

Implementing proper HTTP security headers is crucial for web security best practices. They prevent common vulnerabilities, protect user data, improve SEO rankings, and are often required for security compliance standards like PCI DSS and ISO 27001.

Complete HTTP Security Headers Analysis

Our comprehensive security headers checker evaluates your website against industry security standards. We test for:

  • Content Security Policy (CSP) - Prevents XSS and code injection attacks
  • HTTP Strict Transport Security (HSTS) - Forces secure HTTPS connections
  • X-Frame-Options - Protects against clickjacking attacks
  • X-Content-Type-Options - Prevents MIME type sniffing vulnerabilities
  • Referrer-Policy - Controls referrer information disclosure
  • Permissions-Policy - Manages browser feature access
  • Cross-Origin Resource Policies - CORP, COOP, COEP headers
  • Cookie Security Flags - HttpOnly, Secure, SameSite validation
  • Cache Control - Prevents sensitive data caching
  • Information Disclosure - Detects version leakage

Free Website Security Testing

Use our free online security headers scanner to quickly identify security vulnerabilities in your website's HTTP response headers. Get instant results with actionable recommendations to improve your site's security posture and protect against common web attacks.