You can fill and print the filled form right from the viewer.You can also click the save button, which sends the entered data along with the form to our demo server, which writes the data into the form and sends the modified PDF back to you to open or save. Our demo server neither monitors nor stores the entered data, it only adds it to the PDF form that is then sent back.Note that unlike the save button, the download button does not preserve the data entered into the form, it just downloads the (empty) original form itself.