These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Whether or not to fall back to the export server if the offline-exporting module is unable to export the chart on the client side. This happens for certain browsers, and certain features (e.g. allowHTML), depending on the image type exporting to. For very complex charts, it is possible that export can fail in browsers that don't support Blob objects, due to data URL length limits. It is recommended to define the exporting.error handler if disabling fallback, in order to notify users in case export fails.