These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Link the chart to an HTML element describing the contents of the chart.
It is always recommended to describe charts using visible text, to improve SEO as well as accessibility for users with disabilities. This option lets an HTML element with a description be linked to the chart, so that screen reader users can connect the two.
By setting this option to a string, Highcharts runs the string as an HTML selector query on the entire document. If there is only a single match, this element is linked to the chart. The content of the linked element will be included in the chart description for screen reader users.
By default, the chart looks for an adjacent sibling element with the
highcharts-description class.
The feature can be disabled by setting the option to an empty string, or overridden by providing the accessibility.description option. Alternatively, the HTML element to link can be passed in directly as an HTML node.
When the Exporting module is also loaded, the description
is embedded in the exported SVG as a Dublin Core
RDF <metadata> block, so it is preserved in downloaded images
for indexers and machine readers. If you need a visible caption
in the exported image, use the caption feature.
If you need the description to be hidden visually, use the accessibility.description option.