Two parts to this question.

**First Question Part:**

Ideally, I would like to find a tool where I can upload images into a folder on a web server such as: Image1.png Image2.png Image3.png

and have them merged on-demand together with another image and generate a link, for example:

'Picture of cup A' merges: cupA.png + Image1.png = www.example.com/merged/01/cupA_1.jpg www.example.com/merged/01/cupA_2.jpg www.example.com/merged/01/cupA_3.jpg

'Picture of cup B' merges: cupB.png + Image1.png = www.example.com/merged/01/cupB_1.jpg www.example.com/merged/01/cupB_2.jpg www.example.com/merged/01/cupB_3.jpg

*Etc.*

Second Question Part: Once the above is achieved, I would like to be able to re-position and resize the 'overlaid' image.

Any ideas?