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Action Privacy

List third-party script domains

Counts scripts loaded from external domains and logs them to the console for a quick audit.

Code to copy

(function () {
  var here = location.hostname.replace(/^www\./, '');
  var hosts = {};
  document.querySelectorAll('script[src]').forEach(function (s) {
    try {
      var h = new URL(s.src, location.href).hostname.replace(/^www\./, '');
      if (h && h !== here && h.indexOf(here) === -1) hosts[h] = (hosts[h] || 0) + 1;
    } catch (e) {}
  });
  var list = Object.keys(hosts).sort();
  console.log('[JustZix] Third-party script hosts (' + list.length + '):');
  list.forEach(function (h) { console.log('  ' + h + ' x' + hosts[h]); });
  if (!list.length) console.log('  none found');
})();

How to use this example

  1. Copy the code with the button above.
  2. Install JustZix (2 minutes) and open the extension on the target page.
  3. Add a new rule matching that page.
  4. Enable the action panel, add a button in the Actions tab and paste the code into it — run it with one click.

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