Xnip is an easy-to-use screenshot app for Mac with rich image annotation tools.
It helps you to capture a full-page screenshot even if the content not showing on the current screen. You can use scrolling capture to capture your source code, article, chat history, etc.
Window capturing with the shadow effect. Furthermore, you can select multiple windows and capture all of them together.
Color Picker Tool
Pick the color of any pixel on the screen and make pixel-perfect capture.
Measure objects by the screen with the physical unit size indicator of selection.
Pin screenshot or any image on your screen.
Download & buy
Download and buy this screenshots app from Mac App Store here.