I recently had the need to change the default Mac OSX takes it’s screen shots in. There’s some occasions where you need more quality than PNG and some occasions where you need a file anyone can open and simply don’t want PNG as your default.
Well, in OSX 10.4 and onwards you can change the default screen shot format.
Start by opening Terminal, located in /Applications/Utilities/Terminal
Type in:
defaults write com.apple.screencapture type image_format
killall SystemUIServer
Replace image_format with your selected format that you wish to change the default setting to. The second line reloads the default so that you don’t need to log out and back in again for the change to take effect. The next time you take a screen shot after executing both of these commands, it will be saved in the new format you have chosen.
Below is a list of several popular image types and their commands in full should you wish to paste them.
BMP
defaults write com.apple.screencapture type bmp
killall SystemUIServer
GIF
defaults write com.apple.screencapture type gif
killall SystemUIServer
JPG
defaults write com.apple.screencapture type jpg
killall SystemUIServer
defaults write com.apple.screencapture type pdf
killall SystemUIServer
PNG
defaults write com.apple.screencapture type png
killall SystemUIServer
TIFF
defaults write com.apple.screencapture type tiff
killall SystemUIServer
