3W1 SEO Tools

Make your WWW the #1 with SEO!

  1. SEO Analysis
  2. Predicted PageRank
  3. PageRank Button
  4. Check PageRank
  5. WHOIS
  6. HTTP Headers 

3W1 strongly recommends „White Hat SEO” – learn why it's good for your website, while „Black Hat SEO” is not.

19 HTTP Headers from https://goo.glWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/2 400
  2. content-type: text/html; charset=utf-8
  3. vary: Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
  4. cache-control: no-cache, no-store, max-age=0, must-revalidate
  5. pragma: no-cache
  6. expires: Mon, 01 Jan 1990 00:00:00 GMT
  7. date: Wed, 22 Oct 2025 22:07:29 GMT
  8. content-length: 0
  9. strict-transport-security: max-age=31536000
  10. permissions-policy: ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-wow64=*, ch-ua-form-factors=*, ch-ua-platform=*, ch-ua-platform-version=*
  11. accept-ch: Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-WoW64, Sec-CH-UA-Form-Factors, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
  12. cross-origin-opener-policy: unsafe-none
  13. content-security-policy: script-src 'report-sample' 'nonce-4-_QyD0y0nFFecsAWVkrUg' 'unsafe-inline';object-src 'none';base-uri 'self';report-uri /_/DurableDeepLinkUi/cspreport;worker-src 'self'
  14. content-security-policy: require-trusted-types-for 'script';report-uri /_/DurableDeepLinkUi/cspreport
  15. server: ESF
  16. x-xss-protection: 0
  17. x-frame-options: SAMEORIGIN
  18. x-content-type-options: nosniff
  19. alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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