How to add text fields to a user uploaded PDF by drag and drop method?

please someone explain me to how to drag and drop a text field to the uploaded PDF like adobe sign do.

I'm trying to make a react application using DocuSign API, I need to add fields in the PDF.

You can use embedded sending to embed the sending experience in your app which then allows your users to drag and drop tabs on the document. This how-to guide provides sample code that shows how to use this feature. You can also download a Quickstart and run the embedded sending example to see how this works.