A neat TV like remote control appears on the screen along with a square with rulers all round, all you do is drag and size the square with pixel accuracy to the bit you want to capture and press capture on the remote.
Simple buttons come into play next.
You can edit, print or save the captured image. Adjustments are visualized in real-time, providing the ability to compare up to four different results from saving in various formats and compression levels simultaneously. Quick size guide added.