# JS API Reference

# Welcome to the Highcharts JS Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# plotOptions.item.innerSize

In circular view, the size of the inner diameter of the circle. Can be a percentage or pixel value. Percentages are relative to the outer perimeter. Pixel values are given as integers.

If the `rows` option is set, it overrides the `innerSize` setting.