Is there a way to verify a minimum number of pixels or image resolution with the Dropbox upload tool?

This is very important for my printing business. I need customers to upload images for printing posters. I am hoping that the Dropbox upload tool can check to make sure that the image being uploaded meets the minimum resolution requirements that I could input. 

Hi,

Unfortunately, there is no way to limit the allowed resolutions of uploaded images.  It is possible to limit the type and size of files, but not the resolution.