MacOSX How to change the default format of screenshots

The default photo file format for Apple Computer MACOSX system is PNG, if you want to change the default screenshot format to JPG, GIF or PDF, you can enter the following command at the terminal

Change the default format of the Apple screenshot to JPG

Defaults write com.apple.screencapture type jpg

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Modify Apple screenshot default format for GIF

Defaults write com.apple.screencapture type gif

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Modify Apple screenshot default format is PNG

Defaults write com.apple.screencapture type png

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Modify Apple screenshot default format to PDF

Defaults write Com.apple.screencapture type PDF

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Ps:.png format photos have many advantages (otherwise Apple does not return the default to. png photos, right), first it is lossless compression, second, PNG format photo display is very fast, just download 1/64 of the image information can display a low-resolution preview image.