Export to Flattened PDF
Choose File > Export…. From the “Export to:” dialog that opens, choose Flattened PDF.
A Flattened PDF takes all the annotations on the PDF, such as a drawn signature, and flattens them so that they are no longer editable.
Print to PDF
To flatten a PDF from the Print dialog:
- Choose File > Print.
- Locate the PDF dropdown menu in the bottom left corner of the Print dialog.
- Select “Save As PDF” from the dropdown menu.