If you have a large number of HtmlCharts you can export each one to a separate page within the same PDF document. This RadCleintExportManager feature is demonstrated in the PDF Multi Page Export
demo. To achieve the same in your scenario you could set a CssClass, for example "pageBreak", to all HtmlCharts:
or wrap every chart in a div element with class "pageBreak". Set the properties in the RadClientExportManager's PdfSettings tag, passing the above-mentioned class to the PageBreakSelector
property. The page will break before every exported element matching that selector.
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