Save Answers from a Fillable PDF Form

Have you been looking for a way to save fillable PDFs that you (or your customers) fill out?  We’ve got a pretty easy solution!  In a nut shell, you are going to add a submit button to your PDF form, then the PDF will send the data entered by the user to Formstack Documents and we generate the PDF with the data saved in it.

Here is what you need to do to get this all setup:

  1. Take your Fillable PDF and setup a new Formstack Documents document.
  2. Copy the Merge URL for that document and add “?download=1” to the end (this will make sure the merged PDF is sent back to the user).  Your Merge URL will look something like
  3. Open the Fillable PDF you uploaded in your PDF editor (NitroPro) and add a submit button if you haven’t already.  For the URL of the button, use the Merge URL from the step above.
  4. Save the PDF and you are ready to test!


Please note: if you make any changes to your fillable PDF, you will need to upload the updated version to Formstack Documents

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  • If I use this button on the fillable .pdf it is simply taking me to an input screen for WebMerge without the fields completed. What am I doing wrong?

    Also, this document is currently a Test and not active.  Would it need to be Active?

  • Hi Maria,

    The document can be in Test mode or Active. Are you sure you added a Submit Button to the PDF and selected all the options shown in the screenshot above?


  • Thanks Jeremy. Sorry about that, works beautifully.


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