How to edit a pdf?

Thank you for reaching support,

If you meant using our Smart Pdf Feature only converts pre-customized/edited pdf and is not a PDF editor or a substitute for it: https://www.jotform.com/products/smart-pdf-forms/

You may choose PDF Editors such as Abobe Acrobat, PDFElement, Foxit Phantom PDF, etc.

Let us know if you have any further questions.

Best.