Free Tool

HTTP Header Checker

Check HTTP response headers for security, caching, and SEO. Analyze headers like Cache-Control, Content-Security-Policy, and more.

HTTP Header Checker tool interface goes here

What You Get

Instant analysis results

No registration required

Completely free to use

Mobile & desktop scores

Core Web Vitals metrics

Actionable recommendations

Paste the website URL you want to analyze

Our tool scans your site using industry-standard metrics

Review detailed scores and actionable recommendations

At minimum: Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Strict-Transport-Security (HSTS).

Caching headers affect performance (and thus Core Web Vitals). Security headers don't directly affect SEO but protect your users.

Validate your XML sitemap. Check for errors, verify URL count, and ensure proper formatting for search engine discovery.

Validate your robots.txt file and test URL blocking rules. Ensure search engines can crawl your important pages.

Find broken links on your website. Identify 404 errors, dead links, and missing pages that hurt SEO and user experience.

Check URL redirects and identify redirect chains. See all hops from origin to destination and detect redirect loops.

Master caching strategies for web performance. Learn about browser caching, CDN caching, and server-side caching with proper cache invalidation.

Set up a Content Delivery Network (CDN) to serve your website faster worldwide. Covers Cloudflare, AWS CloudFront, and caching strategies.

Optimize your server response time and reduce Time to First Byte (TTFB) with CDN configuration, caching strategies, and backend optimization.

Audit multiple URLs at once and get comprehensive performance insights.