Can you use a pdf file in the background and place a jotform on top (to add a text & signature input boxes)?

Hello cocinapos,

If I'm interpreting your question correctly, you want a PDF with a form in it and you would like it to be fillable. If this is the case, yes you can have a PDF version of your form. You can refer to this article on the details and the How-to's on creating a fillable PDF form: https://www.jotform.com/blog/193-How-to-Create-a-Fillable-PDF-Form-using-JotForm

Here is another guide providing instructions on how to create fillable PDF forms: https://www.jotform.com/help/212-How-to-Create-a-PDF-Form

If you have questions, please let us know.