HTTP Headers Checker
Headers that affect SEO and security
Chexter sends a request to the URL and analyzes all HTTP response headers: indexing control, caching, compression, security, and HTTP-level canonical.
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Methodology
How HTTP Headers Checker works
A server-level noindex in X-Robots-Tag overrides any meta robots tag in HTML — often added inadvertently by hosting configs.
Is the correct text/html charset set? Wrong Content-Type can prevent proper parsing.
Are caching headers set? Correct Cache-Control improves performance and crawl efficiency.
Is gzip or Brotli compression enabled? Compression reduces page size by 60–80%.
HSTS, X-Content-Type-Options, X-Frame-Options — basic security hardening for SEO trust.
What HTTP Headers Checker checks
Why use Chexter HTTP Headers Checker
Frequently Asked Questions
What is X-Robots-Tag?
X-Robots-Tag is an HTTP response header that controls how search engines index a page — similar to the meta robots tag, but set at the server level. A noindex value here will prevent indexing even if the HTML says index.
Why does compression matter for SEO?
Compressed pages load faster, reducing Time to First Byte (TTFB) and improving Core Web Vitals scores. Google uses page speed as a ranking signal.
What is a canonical at HTTP level?
A Link: <url>; rel="canonical" HTTP header signals the preferred URL to search engines — an alternative to the HTML <link rel="canonical"> tag.
What caching headers should be set?
Cache-Control: public, max-age=31536000 for static assets. For HTML pages: Cache-Control: no-cache or short max-age to allow revalidation.
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