highcharts-export-server/samples/batch/batch_2.json

Convert Highcharts.JS charts into static image files.

{
  "title": {
    "text": "Batch no. 2"
  },
  "xAxis": {
    "categories": ["Jan", "Feb", "Mar", "Apr"]
  },
  "series": [
    {
      "type": "column",
      "data": [1, 2, 3, 4]
    }
  ]
}