I’d like to suggest a new feature in Report Builder for WPDataTables:-
The option to produce reports from XLS or DOCX templates but have the output files downloaded as PDFs only. This would include generating multi-file downloads (zipped) as PDFs.
Use case: invoices or confidential info reports - whereas XLS or DOCX files can be very easily modified by the end-user, PDFs are slightly more difficult to alter.

The very much related suggestion #111 has been in progress for quite a time, it seems… hopefully they get that completed in the near future, PDF simply is the format of choice to deliver documents.
