$ touch /usr/share/applications/robomongo.desktop
$ vim /usr/share/applications/robomongo.desktop
[Desktop Entry]
Encoding=UTF-8
Type=Application
Name=Robomongo
Icon=/opt/robomongo-{robomongo-version}/bin/robomongo.png
Exec="/opt/robomongo-{robomongo-version}/bin/robomongo"
Comment=Robomongo desktop entry
Categories=Development;
Terminal=false
StartupNotify=true
For transparent Icon, you can get it from Robo3t logo. To download it, just run:
wget https://dashboard.snapcraft.io/site_media/appmedia/2018/09/logo-256x256.png