From Space Potato Labs:
What is Simple Screen Capture? Simple Screen Capture makes taking a screenshot of your desktop as painless as possible. Simple Screen Capture is the simplest way of taking or capturing a screenshot of your computer. All you need to do is click capture. Its that easy. And to save a screenshot you just click save. It could not get any simpler. Simple Screen Capture also has a built in screenshot viewer so you can view your screenshots with out ever closing the program! And even better simple screen capture saves all its screenshots as high resolution (720p) JPEG image format. Simple Screen Capture can handle all of your screen capturing needs.