Turn on your computer and enter DOS window, drag the icon of the software into DOS window, which downloaded from the site https://www.verydoc.com/doc-to-any.html, here mind the icon route, when downloaded and kept in a disk, during the drag, you’d better do it from a regular way, in order to avoid some non-recognition. Then in turn drag the icon of doc file and pdf file into DOS window, the latter operation you can repeat the former, then substitute pdf for doc. Below is the illustration to indicate the key way for doc to pdf ( I suppose the software has been downloaded in the D disk of the computer and the doc document been founded on the desktop of the computer ).
This indicates the software is downloaded and remained in D disk of the computer, and on the left the doc document has been founded.
This indicates the drag from the store in D disk into DOS window.
This step operates right for doc to pdf, the left is easy to do, believe you have understood.