Disabling the Window Shadow for Screen Shots in OSX

Usually a window Screen Shot in OSX comes with a huge (40px) border that provides an aesthetic shadow. Unfortunately it makes the Screen Shots huge! Further, while you can't shrink the size of the shadow (which would be nice) you can turn it off completely.

On the command line run:

defaults write com.apple.screencapture disable-shadow -bool true

Then need to restart SystemUIServer by killing it:

killall SystemUIServer

Then a quick Screen Shot with Command Shift 4, then space will give you Screen Shot without a shadow:

To reverse things run the following:

defaults write com.apple.screencapture disable-shadow -bool false

Easy.