Change screenshot file format in Snow Leopard to PNG

Alec Jacobson

June 16, 2010

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Just started working on a snow leopard machine and have been annoyed that the screenshots are saved as PDFs. To switch back to png I opened Terminal.app and issued this command:
defaults write com.apple.screencapture type png
Then you must issue:
killall SystemUIServer
to make the change take effect. Note: You can replace png in the above with any of these: png, pdf, tiff, pict, bmp, gif, psd, sci, or tga. source