Hello Andrew,

Thank you for your input.

As already explained in the support ticket you have opened on the issue, the web viewer doesn't print the report due to browser restrictions. I will summarize the information I shared with you here, so it is publicly available to our users.

Upon triggering the Print functionality of the Web Report Viewer, the latter requests the PDF document from the Reporting REST Service and invokes the Printing functionality of the browser's PDF plugin. Here is the code we add to the PDF Device Information Settings when generating the PDF document for printing:

deviceInfo["JavaScript"] = "this.print({bUI: true, bSilent: false, bShrinkToFit: true});";

And the meaning of the options:

bUI: true

Shows the Print dialog UI. The user will see the standard print dialog and can pick the printer, pages, copies, etc.

bSilent: false

Do not print silently. In other words, it requires user interaction (consistent with bUI: true). Silent printing (true) attempts to send the job directly to the default printer without prompts (but is usually restricted by Acrobat’s security settings and generally not allowed from untrusted scripts or in Reader).

bShrinkToFit: true

If the page content is larger than the printer’s printable area, scale down to fit so it doesn’t get clipped. If the content is smaller, it won’t scale up—this only shrinks oversized pages.

We will consider your request and check whether there is a setting we may apply to ensure the printed pages are not rotated on "wide-edge" leading media.

Regards,
Todor
Progress Telerik