The IDRViewer does not support printing. The IDRViewer dynamically loads (and unloads) pages, which means that not all pages are available to print when using the browsers built-in print functionality.
We have investigated creating a special print mode to allow the browser to print the entire document, however, we have found that due to limited print functionality inside web browsers this is not viable for performance reasons.
Our recommendation is to provide access to the original PDF for users to download and print on the device locally.
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