There are a few problome thogh.

One is it doesn't save the settings. Two it would be nice to preview the images, just the first one. Three set custom positions on the image, possibly by % like leave 2% border or 2px border. Four, more information on the progress bar, like % done, current image, images done and images left.

I did have one big problems witch it completely messed up gif images. Possibly rewrite the color channel to allocate the image your inserting over it, or alter the (C) image to fit within the color channel i.e.. black and white or gray scale.

Over all it is a nice app.