Add watermarks to images

Hello everyone,

I was wondering if there is a plugin, or maybe even a function, that makes it possible for me to att a custom watermark to my images.

I would like to select a custom watermark per image. For instance I would like to have ‘watermark2.png’ to be watermarked on ‘image1.jpg’ and ‘watermark1.png’ on ‘image2.jpg’.

I hope you know what I mean, and I’m hoping for help. Other solutions are welcome as wel of course.