How to get lower resolution image in current clipboard after using macOS screen-capture shortcut? I have set Command + Shift + 4 to a keyboard shortcut to take a screenshot and save to clipboard, usually, I will paste this image for next usage.

But I want to lower the resolution of the image in the current clipboard because it's too big, how to do this?
With the image at Clipboard, you can open Preview.app, hit command+N.
Go to Tools menu > Adjust Size..., make modifications.
Using the selection, cover the whole image, liberally. Don't worry if you've got lot of padding around it.


Hit command+C and paste wherever you want.




"Export as..." also provides some options to downsize the image.