Sign a PDF form with an image
Alec Jacobson
October 13, 2012
I tried to sign a PDF form that was sent to me using Acrobat Pro but all the sign fields were greyed out. TO get around this I first opened the document in Preview.app, clicked Print > PDF > Open PDF in Preveiw. This opens up a copy of the document, but the forms have been converted to a plain document. Then I could open it up in Acrobat and dump in my signature image using Tools > Comment & Markup > Stamps > Paste Clipboard Image as Stamp Tool.