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.

12 HTTP Headers from https://wikileaks.orgWith a configurable User Agent String, referring URL (referer) and cookies


  1. HTTP/2 200
  2. server: nginx
  3. date: Wed, 22 Oct 2025 14:45:29 GMT
  4. content-type: text/html; charset=utf-8
  5. vary: Accept-Encoding
  6. surrogate-control: ESI/1.0
  7. cache-control: public, max-age=1200
  8. vary: Accept-Encoding
  9. x-varnish: 3528277 196611
  10. age: 16341
  11. via: 1.1 varnish (Varnish/7.1)
  12. accept-ranges: bytes

Latest HTTP Headers requests list 30 URLs with HTTP status codes


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