MS Office has functionality to add markups and comments into document. This functionality is shown on the following picture
The MS Office has option to generate PDF file from office file with markup, as a result pdf file will contain markups, comments etc.
I need to generate PDF file from office file on server machine but in my case I can not install MS Office on server machine to use Office API. I tried to use PDFTron to generate PDF file from office file but PDFTron does not export markups from office file to PDF file. How can I solve it? What can I use to generated PDF file with markups if PDFTron does not support exporting markups in PDF file?