How to resize a series of images within a minute?

Just think that your client request you to resize 1000 enlarge images to a particular size for his/her website’s gallery page. Can you imagine that how it’s difficult to resize each image separately?

I am writing here that how you can resize those 1000 images within a minute as I have written articles on "how to approve a web design layout quickly" and "5 steps of quick and perfect website layout design" to get quick solution.