HTTP Headers Checker
Inspect a website response and see status, timing, cache headers, security headers, and exposed server details.
Free HTTP Headers Checker
HTTP headers explain how browsers, crawlers, CDNs, and security tools handle your pages. This checker helps website owners and developers audit cache behavior, content type, status codes, and common security headers from one clean report.
Headers worth checking
The most useful headers for website operators are cache-control, content-type, strict-transport-security, content-security-policy, x-frame-options, x-content-type-options, and referrer-policy.
How headers affect conversions
Headers influence performance, browser security, indexing, and reliability. A missing cache header can slow repeat visits, while a broken content type can stop assets from loading correctly.
Frequently Asked Questions
What are HTTP headers?
HTTP headers are metadata sent with a request or response. They tell browsers and crawlers how to cache, render, secure, and interpret a resource.
Which security headers should a website have?
Most production sites should consider Strict-Transport-Security, Content-Security-Policy, X-Content-Type-Options, Referrer-Policy, and frame embedding protections.
Why is cache-control important?
Cache-Control tells browsers and CDNs how long they can reuse a response. Good caching improves repeat load times and reduces hosting bandwidth.
Can response headers affect SEO?
Yes. Status codes, content type, redirects, canonical signals, and caching behavior can all affect crawlability, page speed, and search performance.
Does Swetrix use website headers in analytics?
Swetrix focuses on privacy-first analytics, but header issues can explain traffic drops or page performance changes that you see in analytics reports.
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