HTTP Header Analyzer

The HTTP Header Analyzer fetches and analyzes HTTP response headers from any website. It examines security, performance, and SEO-related headers to provide insights, recommendations, and scores to help improve your website's security posture and performance.

The tool analyzes several categories of headers: Security headers (CSP, HSTS, X-Frame-Options), Performance headers (Cache-Control, Content-Encoding, ETags), SEO headers (Content-Type, Content-Language), and Custom headers (typically X- prefixed headers).

Security score is based on the presence of key security headers like CSP, HSTS, X-Frame-Options, and X-Content-Type-Options. Performance score considers compression, caching, and ETags. SEO score evaluates content-type charset and language declarations.

Essential security headers include: Content-Security-Policy (prevents XSS), Strict-Transport-Security (enforces HTTPS), X-Frame-Options (prevents clickjacking), X-Content-Type-Options (prevents MIME sniffing), and Referrer-Policy (controls referrer information).

You can analyze most public websites. However, some sites may block automated requests, and websites behind authentication or with strict CORS policies might not be accessible. The tool works best with publicly accessible websites.

Status indicators show: Good (green) - header is properly configured, Warning (orange) - header could be improved for better security/performance, Error (red) - critical issue found, Info (gray) - header is present but neutral impact.

To improve security score: Add Content-Security-Policy header to prevent XSS attacks, implement Strict-Transport-Security for HTTPS enforcement, set X-Frame-Options to prevent clickjacking, and add X-Content-Type-Options: nosniff to prevent MIME type sniffing.

The tool provides specific recommendations for each header, such as removing unsafe CSP directives, increasing HSTS max-age values, enabling compression for better performance, and adding missing security headers to improve overall security posture.

Yes! You can copy the full analysis report to your clipboard or download it as a text file. The report includes all headers, scores, recommendations, and analysis details for documentation or sharing with your team.

Yes, the analysis is completely safe. The tool only makes standard HTTP requests to fetch headers, similar to what a browser does when visiting your website. No modifications are made to your site, and the analysis is read-only.

It's recommended to analyze headers after any server configuration changes, security updates, or as part of regular security audits. Many organizations include header analysis in their monthly security reviews or CI/CD pipelines.

Review the specific recommendations provided for each header. Start with implementing basic security headers like X-Frame-Options and X-Content-Type-Options, then work on more complex ones like Content-Security-Policy. Consult with your development team for implementation details.