"To use in Mint/Cinnamon 20.2 (and likely other versions) you need to instal Zeitgeist and at least in my case I needed the newer version of Diodon (1.11.1). Here's how I did it: 1) sudo add-apt-repository ppa:diodon-team/stable 2) sudo apt-get update 3) Use synaptic to install Diodon 1.11.1 (the ppa allows you to get this later version, then you can likely install it from the terminal if you prefer) 4) sudo apt-get install zeitgeist (I had to close other programs first in order for this command to work) 5) sudo apt-get install activity-log-manager-control-center (once installed, running this allows you to adjust Zeitgeist settings, I turned everything off except 'documents' and 'images' so these are saved in the clipboard for Diodon to use, but nothing else is stored) 6) Restart Diodon if you had it running before installing Zeitgeist, then you can map Diodon to a keyboard shortcut (directions in Diodon's 'preferences'), I used 'super-v' as in Windows. Not easy but it seems to work. Note: in Firefox (I'm running 93) you have to be quick with your custom shortcut or else Diodon won't open. Seems to work perfectly in a text file. Pastes plain text only, which I prefer. 5 starts because it includes pasting images and comparable alternatives I tried I couldn't get to work."