HTTP Headers Analyzer
Analyze HTTP response headers and security configurations for any website.
Enter Website URL
Enter a complete URL to analyze its HTTP headers (e.g., https://example.com)
What are HTTP Headers?
HTTP headers are metadata sent between browsers and servers during web requests. They contain information about caching, content types, security policies, authentication, and server configuration. Headers are invisible to users but crucial for web functionality and security.
Security Headers Explained
Frequently Asked Questions
Why are security headers important?
Security headers protect your website and visitors from common attacks like XSS (cross-site scripting), clickjacking, and man-in-the-middle attacks. Missing headers leave your site vulnerable to exploitation.
What is HSTS and why should I use it?
HSTS (HTTP Strict Transport Security) tells browsers to only connect via HTTPS, preventing downgrade attacks and accidental HTTP connections. It's essential for sites handling sensitive data.
How do I add security headers to my website?
Security headers are configured on your web server (Apache, Nginx) or through CDN settings (Cloudflare, AWS CloudFront). Many hosting platforms also provide header configuration options.
What does Content-Security-Policy do?
CSP specifies which resources can be loaded on your page, preventing XSS attacks by blocking unauthorized scripts, styles, and other content from executing on your site.
Common HTTP Header Use Cases
Security Auditing
Check if websites implement proper security headers and identify potential vulnerabilities.
Caching Analysis
Verify cache-control headers are set correctly for optimal performance and content freshness.
Server Identification
Identify web server software, programming languages, and frameworks from response headers.
Debugging Issues
Diagnose CORS errors, authentication problems, and content-type mismatches using header data.