You can export data you enter into a form to a separate file. When you export the form data, it’s saved in a file that’s considerably smaller than the original PDF. A smaller file is preferable for archiving or sharing the data electronically. Depending on how the form was created, you can save the form data as a tab-separated text (TXT), Acrobat XFDF (XFDF), Acrobat Form Data Format (FDF), or Extensible Markup Language (XML) file; or, you are able to save the form only in XML or XDP format.
You can also import data from an exported file into another form if that form has fields with the same names. Alternatively, you can import file data from a text file.
PDF forms can contain an email-based submit button that exports the data you entered. You can email the form data with a desktop or web-based email application, or you can submit the form data at a later time.