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Print functionality in the HTML5 report viewer is not working with PDF/A compliance level


Product Progress® Telerik® Reporting
Report Viewer HTML5


The printing functionality of the Html5 Report Viewer uses PDF with injected custom JavaScript to force the Print dialog of the browser PDF plug-in to pop up - Printing Reports.
PDF/A standards do *not* support JavaScript in the PDF document (check for example PDF/A Wikipedia article). Therefore, an error would be thrown when PDF rendering extension compliance level is different from the default (None).

Error Message

{"message":"","exceptionMessage":"The used Compliance Level is not supported with immediate print. The immediate print requires script inclusion.","exceptionType":"Telerik.Reporting.Services.Engine.DocumentRenderException"...}


The avoid the problem it is necessary to configure a second entry for PDF/A rendering using the approach explained in the Configuring Multiple Entries for a Rendering Extension article section.

The following configuration code will introduce a new Export entry (PdfExport that will appear as 'PDF/A' under Viewer Toolbar -> Export), and will hide the original PDF export option. The latter is used for Printing and its compliance level should be kept to None (the default value) to allow JavaScript.

    <extension name="PdfExport"
               type="Telerik.Reporting.ImageRendering.PdfReport, Telerik.Reporting, Version=, Culture=neutral, PublicKeyToken=a9d7983dfcc261be"
        <parameter name="ComplianceLevel" value="PDF/A-3b"></parameter>
    <extension name="PDF" visible="false"></extension>
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