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HTTP Header Checker

Inspect any URL's response headers, full redirect chain, and security posture. Checks HSTS, CSP, X-Robots-Tag, caching, compression and more — the headers that quietly make or break SEO.

Redirect chainSecurityX-Robots-Tag

Why headers matter for SEO

A single X-Robots-Tag: noindex in your headers can silently deindex a page no matter how good the content is. Redirect chains waste crawl budget and dilute link equity. Missing HSTS/CSP hurts trust signals. This tool surfaces all of it in one pass.