How do I convert pdf to Word on a Mac? I have a book manuscript sent to me in pdf by a publisher that I need to edit. I have downloaded various converter programs off the web, such as pdfpen, but they are overwhelmed by the pdf - 348 pages. pdfpen couldn't be opened on my computer; "no available application can open it." A "how-to" off the internet seemed to be working until I got to the last step, which was "To open the file, drag and drop the file on top of the PDF-to-text application." I could not find that application or any prompt like it.