In ubuntu how can I use gnome screenshot and xfce screensho

Solution

Xfce4 Screenshooter : This application allows you to capture the entire screen, the active window or a selected region. You can set the delay that elapses before the screenshot is taken and the action that will be done with the screenshot: save it to a PNG file, copy it to the clipboard, open it using another application, or host it on ZimageZ, a free online image hosting service.

gnome-screenshot :

Despite its name its dependencies are only dconf, gtk3, and libcanberra.