Quote from: gil on November 19, 2018, 06:51:03 am
I can only open it on my phone but not my Mac...
Gil, the Mac version of the free OpenOffice suite opens DOCX files with no problems. I use it frequently on Microsoft formatted files, including DOCX text and XLS spreadsheet. As long as there isn't any weird formatting or macros involved, it works fine. It also exports files as PDF through the menu "File/Export as PDF" option.
Many people have switched to the free LibreOffice fork of OpenOffice because of a difference in "free" license terms, but LibreOffice made some UI decisions I have a hard time living with so I went back to OpenOffice.
In any event, both of these handle DOCX/XLS files and export as PDF easily.