If you find yourself needing to crop photos and images on your Android device, then Photo Resizer HD is a handy tool.
Photo Resizer HD makes it very easy to crop and resize individual or batches of images. To edit batches, you simply select them in your Android photo gallery and "Share" them to Photo Resizer HD. There are a few other useful tools including Rotate, Horizontal, Flip and Sharpen.
Your edited images will be saved on your SD card in the location you've specified in Settings.