Disable the Window Shadow on Screen Shots in Mac OS X
Ever noticed that there’s a shadow on every screen shot of a window you take in Mac OS X? You can easily turn this off by using the command line:
defaults write com.apple.screencapture disable-shadow -bool true
You’ll then need to restart SystemUIServer by killing it:
Now take a screen capture of an individual window using Command+Shift+4 and the screen shot will not include the window shadow.
If you want to revert back and have shadows on individual window screen captures again, use:
defaults write com.apple.screencapture disable-shadow -bool false
And again kill SystemUIServer for changes to take effect.