Do Not Track

This tool checks your web browser for Do Not Track — DNT HTTP Header detection, as well as JavaScript doNotTrack detection.

The Patient's Web Browser

CCBot/2.0 (

HTTP Header method to detect Do Not Track

DNT× False

JavaScript ways to detect Do Not Track

navigator.doNotTrack× False (javascript disabled)
window.doNotTrack× False (javascript disabled)
navigator.msDoNotTrack× False (javascript disabled)

Further Reading

  1. Do Not Track — Wikipedia
  2. Do Not Track FAQ — Mozilla
  3. Do Not Track - Universal Web Tracking Opt Out

  4. Tracking Preference Expression (DNT) — W3C
  5. Navigator.doNotTrack — Mozilla Developer Network
  6. DNT HTTP — Mozilla Developer Network

  7. Why Do Not Track is worse than a miserable failure — ZDNet
  8. Internet 'Do Not Track' system is in shatters — Computerworld
  9. W3C's failed Do Not Track crusade tumbles to ad-blockers' Vietnam — The Register

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