When using PDF forms, it's possible to export, store and import the data in Form Data Format (FDF). Since an FDF file only includes the form data and not the form itself, it is much smaller and more lightweight that the complete PDF form, making it more efficient to manipulate. This tip explains how to export and import FDF data using Acrobat.
To export data from a PDF document:
Select Advanced > Forms > Export Forms Data.
Type a name for the file in the Select File to Save Form Data dialog box.
To import data into a PDF document:
Select Advanced > Forms > Import Forms Data.
Select the file to import in the Select File Containing Form Data dialog box.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.