score:4

You can place images on top of individual bars using chartjs-plugin-labels.

Please have a look at the following runnable code snippet:

new Chart(document.getElementById('myChart'), {
  type: 'bar',
  data: {
    labels: ['A', 'B', 'C', 'D'],
    datasets: [{
      label: 'My Dataset',
      data: [25, 59, 80, 76],
      fill: false,
      backgroundColor: ['rgba(255, 99, 132, 0.2)', 'rgba(255, 159, 64, 0.2)', 'rgba(255, 205, 86, 0.2)', 'rgba(75, 192, 192, 0.2)'],
      borderColor: ['rgb(255, 99, 132)', 'rgb(255, 159, 64)', 'rgb(255, 205, 86)', 'rgb(75, 192, 192)', 'rgb(54, 162, 235)'],
      borderWidth: 1
    }]
  },
  options: {
    plugins: {
      labels: {
        render: 'image',
        textMargin: 10,
        images: [
          {
            src: 'https://i.stack.imgur.com/9EMtU.png',
            width: 20,
            height: 20
          },
          null, 
          {
            src: 'https://i.stack.imgur.com/9EMtU.png',
            width: 20,
            height: 20
          },
          null
        ]
      }
    },
    layout: {
      padding: {
        top: 30
      }
    },
    legend: {
      display: false
    },
    scales: {
      yAxes: [{
        ticks: {
          beginAtZero: true
        }
      }]
    }
  }
});
canvas {
  max-width: 300px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.bundle.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/emn178/chartjs-plugin-labels/src/chartjs-plugin-labels.js"></script>
<canvas id="myChart" width="10" height="6"></canvas>


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