Drag-N-Scale is a graphics editing tool that lets you resize your images. There are applications out there, both included within your Mac or free downloadable apps that can do this task, but Drag-N-Scale uses a whole different approach for scaling images on your Mac. One of its benefits is that it can process multiple images at the same time. That, coupled with ease of use, makes this application worth its price tag.
To start working with your images, you can add them by dragging them onto the application or by clicking on the "+" button at the bottom of the screen. Once your images are added, you can drag and drop on the corner of the window to scale the images. It should be noted that Drag-N-Scale can't increase the resolution of an image. It works best with large images which you may want to make smaller. Once you have set the resolution to a value that you want, you can save all the images with their new resolution. You can even change the name of all the images sequentially.
In my testing, I added several 10 megapixel photos. They were too big for use on a blog, so I scaled them all down to a resolution of 510x682 and saved them to a new folder. This would have taken considerably longer doing each photo at a time.