Bulk Image Editor to Add Footer (or Header)

Hi guys,

I've googled this a few times, but kinda went around in circles. Is there a program out there that will get a load of images (thousands), of different sizes and proportions, then add (actually extend) a custom footer or header?

I've found one program but it overlays the footer of the image which makes a good proportion of the images useless,

Thanks in advance and best wishes for 2017

Interested . please share your skype ID buddy