Add Footer to PDF — Fox it For some PDF file, you need to remove some elements before your can add a header & footer. For example, if your upload contains any text boxes, in this example, you need to delete those boxes first before add your additional headers & footers. To do the trick, you need to edit the files “Edit and “Get Info” pages. To remove any text box from a file Press control-X, then click the ‐ button in the top right corner.