Once uploaded, locate your PDF in Google Drive. Right-click on the file and select Open with, and Google Docs. This converts your PDF into an editable Google Docs format.

At the top of your Drive window, you’ll see an option to Open With Google Docs. If you select this, Google will convert the PDF to a Docs file and open it for you. Content can be edited in Docs ...

However, if you first save the file as a Docs format, you can then go on to convert it to a PDF. On an Android device Open the document in (or share it to) the Google Docs app.