{
  "slug": "adblock",
  "category": "ad-blockers",
  "name": "AdBlock",
  "description": "Ad blocker for browsers and mobile, owned by eyeo, which shows ads approved under the Acceptable Ads program by default on desktop.",
  "website": "https://getadblock.com",
  "source": "https://gitlab.com/eyeo/browser-extensions-and-premium/extensions/extensions",
  "license": null,
  "platforms": [
    "windows",
    "macos",
    "linux",
    "android",
    "ios"
  ],
  "jurisdiction": {
    "code": "US",
    "name": "United States",
    "eyes": "Five Eyes",
    "eu": false,
    "gdpr": false,
    "cloud_act": "provider"
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "F",
  "score": 24,
  "coverage": 100,
  "summary": "AdBlock scores 24 out of 100 (grade F) on the ad and tracker blockers criteria. It meets 1 of 7 criteria: custom filters. It partly meets open source and no browsing data collected. It does not meet no trackers or telemetry, no ads or data sales, independent audit and effective by default. It is based in the United States: Five Eyes member; subject to the US CLOUD Act.",
  "url": "https://privacyratings.com/ad-blockers/adblock/",
  "markdown": "https://privacyratings.com/ad-blockers/adblock/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://gitlab.com/eyeo/browser-extensions-and-premium/extensions/extensions/-/blob/main/COPYING",
      "note": "The browser extension is GPL-3.0, but the mobile apps are closed source."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "no",
      "evidence": "https://getadblock.com/en/privacy/",
      "note": "The website loads Google Tag Manager, Google Analytics is used for the website, extensions and apps outside the EU, and the mobile apps use Firebase analytics."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "no",
      "evidence": "https://helpcenter.getadblock.com/adblock-help-center/introduction-to-filter-lists",
      "note": "Shows Acceptable Ads by default on desktop, a program in which large platforms pay eyeo a licensing fee."
    },
    "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": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "blocks_by_default": {
      "title": "Effective by default",
      "weight": 3,
      "answer": "no",
      "evidence": "https://helpcenter.getadblock.com/adblock-help-center/introduction-to-filter-lists",
      "note": "Acceptable Ads are enabled by default in the Chrome, Edge and Firefox extensions."
    },
    "no_data_collection": {
      "title": "No browsing data collected",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://getadblock.com/en/privacy/",
      "note": "Filtering happens on the device, but the extension sends anonymous usage information with a unique installation ID, such as counts of blocked ads."
    },
    "custom_filters": {
      "title": "Custom filters",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://helpcenter.getadblock.com/adblock-help-center/how-to-use-custom-filters",
      "note": "Supports custom filters and additional filter lists."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [
      {
        "name": "Google Fonts",
        "host": "fonts.googleapis.com",
        "effect": "none"
      }
    ],
    "tested_at": "2026-10-01T07:01:52.973Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}