Is there any way to import an existing PDF and create a fillable form?

I need to create fillable fields within an existing PDF. Does Jot Form support this? I couldn't find anywhere to import a document--I only saw the ability to create a new form or one that exists on the web already. 

You can import your own fillable PDF form to JotForm so that you can automatically receive submissions using a PDF file. However, please note that imported PDF forms will not be editable in our form builder. I strongly suggest that you recreate the form you have using our form builder, with that, there's another feature that let's you convert JotForm forms to a fillable PDF form. 

Here's a guide about the fillable PDFs: https://www.jotform.com/fillable-pdf-form-creator/ 

Now if you will recreate the form using our form builder, then it can be converted to a fillable PDF form as mentioned in this guide: https://www.jotform.com/help/312-Fillable-PDF-Everything-you-need-to-know-about-JotForm-Fillable-PDF-Creator 

I hope that helps.