A whole dashboard — or a single element — can be exported to PDF or Excel straight from JavaScript.

Export the whole dashboard.
report.exportDocumentAsync(function (data) {
    Stimulsoft.System.StiObject.saveAs(data, report.reportName + ".pdf", "application/pdf");
}, Stimulsoft.Report.StiExportFormat.Pdf);   // or Excel2007
Export a single element.
var chart = report.getComponentByName("Chart1");
Stimulsoft.Dashboard.Export.StiDashboardExportTools.exportAsync(function (data) {
    Stimulsoft.System.StiObject.saveAs(data, report.reportName + ".pdf", "application/pdf");
}, chart, Stimulsoft.Report.StiExportFormat.Pdf);

How it works. Both the dashboard and its individual elements render to file bytes on the client, so users can save the whole board or one panel.
На скриншоте ниже Вы можете увидеть результат выполнения данного кода:

Exporting a Dashboard from Code