Is there any API or SDK available to do Sign and save in pdf document provided by Adobe (Sign and Save) or any other providers (happy if it is open source ). I need to incorporate in my Application. It is an Android Native application or Ionic 3 Application.
I have tried signature pad ( signaturepad ) but have no idea to embed or drag and drop on top of existing pdf file downloaded in the device and save the same. Looking for the possibilities and options.