{
  "slug": "browser-leak-test",
  "category": "online-privacy-tools",
  "name": "BrowserLeaks",
  "description": "Collection of browser tests that show which data a browser exposes to websites, including IP address, WebRTC and DNS leaks, TLS details and canvas, WebGL and font fingerprints.",
  "website": "https://browserleaks.com",
  "license": null,
  "platforms": [],
  "jurisdiction": null,
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "F",
  "score": 22,
  "coverage": 100,
  "summary": "BrowserLeaks scores 22 out of 100 (grade F) on the privacy test tools criteria. It meets 1 of 8 criteria: TLS configuration. It partly meets no ads or data sales and security headers. It does not meet open source, no trackers or telemetry, independent audit, transparency report and tells users about requests. Automated tests: SSL Labs grade A+ and Mozilla HTTP Observatory grade B.",
  "url": "https://privacyratings.com/online-privacy-tools/browser-leak-test/",
  "markdown": "https://privacyratings.com/online-privacy-tools/browser-leak-test/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "no",
      "evidence": null,
      "note": "Closed source."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "no",
      "evidence": "https://browserleaks.com/",
      "note": "The site notice says third-party analytics may be active; the analytics setting is on by default and can be switched off."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://browserleaks.com/settings",
      "note": "Partner attributions and cosmetic ads are shown by default and can be switched off; the site states it collects no personal data."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit is published."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No transparency report or government request policy is published."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "no",
      "evidence": null,
      "note": "No published policy on notifying users about data requests."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.ssllabs.com/ssltest/analyze.html?d=browserleaks.com&hideResults=on",
      "note": "Grade A+"
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "partial",
      "evidence": "https://developer.mozilla.org/en-US/observatory/analyze?host=browserleaks.com",
      "note": "Grade B (75/100+)"
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "pending",
      "evidence": null,
      "note": "Not tested yet."
    }
  },
  "tests": {
    "ssllabs": "A+",
    "observatory": "B",
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T07:01:19.757Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}