You can type on a PDF using one of several different options, depending on the device you are using.

Need to edit a PDF document but don’t want to pay for the more expensive Adobe editors? You can add text to and sign a PDF with just the free Reader program.

How to Change the Created Date on a PDF File. The file properties for a PDF (Portable Document Format) file type include details such as its name, size, folder path, owner, the date and time it ...

You will be able to type into fields, check boxes, and select from options provided in a dropdown menu. Any changes can be saved in the file or as a copy, just like with any other document on Drive.