When you click the Preview button on the template designer, form designer. or send forms screen, the PDF viewer displays the PDF file contents and includes a download button. On the completed form details, the button is labeled Preview.
Note: When using the preview to print a PDF file, if the PDF file has a non-standard size due to having a background PDF image (for example, 8.5 by 14 inches), the initial display of the print dialog may clip the content. To fix this, click More Settings to expand the menu and choose either Fit to Paper or Fix to Print Area in the Scale dropdown. If one of these options is already selected, then swap to the other one to make the change take effect.