You can preview your PDF form at any time by clicking Preview Form in the Tools menu.
The form previews are fully functioning; you can fill them out and submit them in the same way as a published form.
Typically, when you submit a form, it will run some validation checks—for example, maximum characters, numeric value. On a live form this is a valuable process, but on a preview, it can cause complications.
Turn Form Validation on and off with the toggle switch in your preview Toolbar. This allows you to submit a form, even if the content is not valid.
When you preview your form, click Fill Sample Data in the top right Toolbar, and the fields will automatically populate with your example data.
After submitting a form, you can view the generated PDF from the success page. Click Preview PDF in the top right Toolbar.