In use of VeryDOC DOC to any converter you can convert doc, xls, ppt and the like to pdf under DOS window successively. Download the software in the site of
https://www.verydoc.com/doc-to-any.html or https://www.verydoc.com/doc2any_cmd.zip then open the software file marked by the red circle.
Now we convert doc to pdf first
Step1: go to DOS window
Step2: drag the icon of “doc2any.exe”into DOS window
step3: drag the icon of “doc”into DOS window
step4: repeat step3, and with a little alteration that substitute pdf for doc
then press “Enter”, this is OK.
after that, you can continue convert xls to pdf, and ppt to pdf, the method is the same with above.