There are many ways to take a screenshot in macOS (previously Mac OS X), but all of the well-known options give you a drop shadow in the picture when snapping application windows. If you use the Command Shift 3 shortcut, it takes a screenshot of the entire screen. If you use Command Shift 4, it lets you select a portion of the screen. If you use Command Shift 4, followed by Spacebar, you get an option to take a screenshot of a specific window. If you use Command Shift 5 on Mojave and higher, ...
