See where Shutter keeps its plugins on your computer.
On my computer, it's in /usr/share/shutter/resources/system/upload_plugins/upload.
sudo cp utilities/Shutter.pm /usr/share/shutter/resources/system/upload_plugins/upload/Lutim.pm
And restart Shutter if it was running.
Of course, this plugin is configured for the official instance of Lutim (http://lut.im), feel free to edit it for your own instance.
Preferences -> Online Services -> More services -> Install from URL
Install from URL
Double-click the plugin in Preferences -> Online Services for configuration!
Please report issues here.
Someone asks for settings for using Lutim in Sharex. It seems that all the responses are in the API page.
You can now go back to wiki's homepage.