Chart.js - Increase spacing between legend and chart

If you want do increase spacing in all charts you can put this code before creating :

Chart.Legend.prototype.afterFit = function() {
    this.height = this.height + 50;
};

Of course, I don't try but i think you can change it (or copy the original Chart object before, to keep the original padding).

Bye,

If you want to apply padding below legend for some charts only in your app:

ChartJS >= 2.1.0

Chart.plugins.register({
  id: 'paddingBelowLegends',
  beforeInit: function(chart, options) {
    chart.legend.afterFit = function() {
      this.height = this.height + 50;
    };
  }
});

// ----------------------------------
// disable the plugin only for charts
// where you DO NOT WANT the padding
// ----------------------------------

// for raw ChartJS use:
var chart = new Chart(ctx, {
  config: {
    plugins: {
      paddingBelowLegends: false
    }
  }
});

// for angular-chartjs:
$scope.myChart.options.plugins = { paddingBelowLegends: false }
// then in template:
// <canvas class="chart ..." chart-options="myChart.options" ... />

ChartJS >= 2.5.0

Specific plugins for each chart are supported, it should be possible to do:

var chart = new Chart(ctx, {
  plugins: [{
    beforeInit: function(chart, options) {
      chart.legend.afterFit = function() {
        this.height = this.height + 50;
      };
    }
  }]
});

See ChartJS documentation + inspired by this other answer