On macOS, screenshots of windows have an added drop shadow by default for whatever reason. Here’s how to remove it:

To remove shadows from screenshots copy and paste this into the command line:

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defaults write com.apple.screencapture "disable-shadow" -bool "true"

To reset this setting and have shadows in your screenshots again run this:

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defaults delete com.apple.screencapture "disable-shadow"

Alternatively, you can press command + shift + 4 and then press space. Then hold option before you click on a window to take a screenshot. This removes the drop shadow.

References

There were several other sites covering this but they didn’t get right to the point and/or they were ad-ridden, so I decided to write a straightforward post about this.