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.

15 HTTP Headers from https://www.whitehouse.govWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/2 200
  2. server: nginx
  3. date: Wed, 22 Oct 2025 14:48:50 GMT
  4. content-type: text/html; charset=UTF-8
  5. vary: Accept-Encoding
  6. referrer-policy: strict-origin-when-cross-origin
  7. x-xss-protection: 1; mode=block
  8. x-content-type-options: nosniff
  9. x-frame-options: DENY
  10. content-security-policy: upgrade-insecure-requests; frame-ancestors 'none'
  11. cache-control: max-age=300, must-revalidate
  12. accept-ranges: bytes
  13. x-rq: hhn1 0 30 9980
  14. x-cache: HIT
  15. strict-transport-security: max-age=31536000;includeSubdomains;preload

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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