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Take screenshots as JPG on macOS

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I take tons of screenshots on my Mac using the key combination cmd-shift-4 and after I switched from my old Apple Cinema Display which wasnโ€™t retina to the new Studio Display which is 5K I noticed the size of some screenshots was HUGE.

macOS by default uses PNG as the format for screenshots, and depending on what itโ€™s in the screenshot, you can have like 10MB screenshots very easily.

Run this command in the terminal:

defaults write com.apple.screencapture type jpg

followed by

killall SystemUIServer

This will make the screenshots use JPG for the format, which will be much more lightweight.

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