- open th terminal
- run
defaults write com.apple.screencapture disable-shadow -bool TRUE
- run
killall SystemUIServer
Done
Enable the shaddow again (why ever):
- open th terminal
- run
defaults write com.apple.screencapture disable-shadow -bool FALSE
- run
killall SystemUIServer
If you're wondering how to make screenshots: https://support.apple.com/de-de/HT201361 (german) https://support.apple.com/en-us/HT201361 (en)