Mac OSX change screenshot format png to jpg or other

Was doing a project, needed to cut up pictures...
It would have been easy just taking new screenshots and replacing them. Only problem is that MacOSX saves a screenshot as png format, not jpg.

Now you dont have to resave them in an imageeditor, you can just change the preferences of MacOSX like this:
(thanks tice;)

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In Mac OS X 10.4 and later, the default screenshot format can be changed, by opening Terminal (located at /Applications/Utilities/Terminal) and typing in:

defaults write com.apple.screencapture type image_format
killall SystemUIServer
Where image_format is one of jpg, tiff, pdf, png, bmp or pict (among others). If you omit the second line, you will need to log out and in again for the change to take effect.
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or you can always use a hammer...
Please leave your comments.

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