The following article explains how to convert an ODP file format to a PDF document with the help of the novaPDF printer driver and LibreOffice. If you do
Create PDF from OpenOffice Draw with novaPDF - novaPDF
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Should I presume that I cannot attach a PDF file in the LibreOffice spreadsheets? The same applies to Excel. What do you recommend to do this? - Quora
LibreOffice to PDF: Create PDF files from LibreOffice Writer - novaPDF
Create PDF from any application - Online Help - novaPDF
How to convert Libreoffice Documents into PDF file
How to use LibreOffice for converting Word files to PDF files - Quora
Free PDF File Create, Edit and convert on LibreOffice
Convert SolidWorks to PDF - novaPDF