Disable Shadows on Screencapture in OS X Mountain Lion

The process has changed a little bit in Mountain Lion for disabling shadows on screen shots, sometimes… By default, there’s no com.apple.screencapture manifest, so the first step is to create it with the boolean disable-shadow key set to true. This part is the same as with Lion:

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

Now check that disable-shadow shows as a 1:

defaults read com.apple.screencapture

But where it’s a little different is that you previously killed SystemUIServer w/out sudo:

killall SystemUIServer

SystemUIServer would then open back up and screenshots wouldn’t have shadows. And this still works sometimes. But now, I’ve noticed across the 30 or so systems in my lab that while you don’t get an error, the process doesn’t actually change the screen shots from time to time. Sometimes, you need to put sudo in front of the killall now:

sudo killall SystemUIServer

Now everything should work as intended.

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  • Logan Schack

    Hi, Just wanted to post up my thanks.

    I work for a company that requires fallback images for all Flash ads. It is not too difficult to cut the ad with ps, just very much quicker if i only have to cut the top 22px.

    Thanks again for posting this!