This app performs context aware resizing of pictures (a.k.a. seam carving). It analyzes a picture and computes the paths of least resistance (pixels lines known as seams) and removes them. It attempts to capture the most important features of a picture and remove the rest.
Drag the slide bar to indicate the percentage of lines to be removed ans see the result instantaneously. Use the 'Display Seams' options to see what pixels are being removed.