Chart.js doughnut chart tooltip size?

Question

i'm want to resize tooltips on chart. I've used global settings but doesn't work. Tooltips on my charts are too small. Here is the view

$(document).ready(function () {
    // Chart options
    Chart.defaults.global.legend.display = false;
    Chart.defaults.global.titleFontSize = 20;
    var ctx = document.getElementById("Chart1");
    var myChart = new Chart(ctx, {
        type: 'doughnut',
        data: {
            labels: [
                "Produkty",
                ""
            ],
            datasets: [
            {
                data: <?=json_encode(array_values($values));?>,
                backgroundColor: [
                    "#2ecc71",
                    "#3498db"
                ],
                hoverBackgroundColor: [
                    "#27ae60",
                    "#2980b9"
                ]
            }]
        },
        options: {
            cutoutPercentage: 80
        }
    });
});

Answer 1

You can change the title font size too.

options: {
  tooltips: {
    titleFontSize: 10,
    bodyFontSize: 10
  }
}

Answer 2

options: {
     tooltips: { bodyFontSize: 20 }
}