On Sun, 25 Nov 2018 10:34:13 -0600 Gregory P. Ennis wrote: > I have an application that I need to acquire, store and merge to a pdf file a > digital signature from a client. Define your workflow in more detail. If you're still working on adding digitized images of actual physical signatures to a pdf file, then imagemagick can very likely do what you want it to do. One of its capabilities is finding an image within another image which you can then extract or otherwise manipulate. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com