- install xclip
sudo apt-get install xclip- create a new shortcut

spectacle -br -o ~/Pictures/Screenshots/copyshot.png-
take a screenshot and click the setting icon next to the close icon

-
add run command

/usr/bin/xclip -selection clipboard -target image/png -i ~/Pictures/Screenshots/copyshot.pngReference
https://gist.github.com/Xarkam/26d40e98dbad314423c11a27e35aab47 https://www.reddit.com/r/kde/comments/5i4awm/how_to_make_spectacle_copy_to_clipboard_by_default/