chromium/chrome/test/data/android/barcode_detection.html

<html>
<title>test</title>
<body>
</body>
<script>
  var img = new Image();

  img.onload = function() {
    var detector = new BarcodeDetector();

    detector.detect(img)
      .then(detectedObjects => {
        if (detectedObjects.length)
          document.title = detectedObjects[0].rawValue;
        else
          document.title = 'found no shapes';
      })
      .catch(error => {
        document.title = 'Error during detection: ' + error.message;
      });
  }

  // "https://chromium.org" encoded as QR code in base64
  img.src = 'data:image/png;base64,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';
</script>
</html>