After user upload image it will be in your online folder,because actually the user drop images to your cloud safe folder.

Fill params that you wish, you will get image that you wish

The best part is you don't need to store actual file, you need just save image name from response,and you can customize image name from your online operation system.
If you want to integrate your old files just drag and drop your old images and that's it,you don't need to change their name on database like traditional integration methods.