PicShrink is an Android app to dynamically crop, adjust the resolution, and adjust the jpeg compression level of photos. Let's you easily prepare and attach small photos to emails. Features:
- Invoke from any application that let's you select a file
- Sliders to control resolution and jpeg compression level
- Can pinch + zoom to browse specific regions of your photo while adjusting the sliders
Check out the Google Play page for more info and try it out!