Watermark feature now added to the Image Convertor extension. This will take the path of an image on the device and output the modified image as a PNG.
I have noticed that the methods used to modify the file can vastly increase the file size of the image (a large image can take quite a few seconds to complete) If this is the case for you, and the file size is too large, you can use the Image Convertor extension to resize the output image back to what it was...
