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.

20 HTTP Headers from https://gtmetrix.comWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/2 403
  2. date: Wed, 22 Oct 2025 02:02:00 GMT
  3. content-type: text/html; charset=UTF-8
  4. content-length: 7084
  5. accept-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
  6. cf-mitigated: challenge
  7. critical-ch: Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Full-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
  8. cross-origin-embedder-policy: require-corp
  9. cross-origin-opener-policy: same-origin
  10. cross-origin-resource-policy: same-origin
  11. origin-agent-cluster: ?1
  12. permissions-policy: accelerometer=(),autoplay=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
  13. referrer-policy: same-origin
  14. server-timing: chlray;desc="992568f72cde371a"
  15. x-content-type-options: nosniff
  16. x-frame-options: SAMEORIGIN
  17. cache-control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
  18. expires: Thu, 01 Jan 1970 00:00:01 GMT
  19. server: cloudflare
  20. cf-ray: 992568f72cde371a-FRA

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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