# 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.

# colorAxis.labels.reserveSpace

Whether to reserve space for the labels. By default, space is reserved for the labels in these cases:

- On all horizontal axes.
- On vertical axes if `label.align` is `right` on a left-side axis or `left` on a right-side axis.
- On vertical axes if `label.align` is `center`.

This can be turned off when for example the labels are rendered inside the plot area instead of outside.