- open terminal:
ALT+CTL+T to open termainal
sudo dpkg -i google-webdesigner_current_amd64.deb
(You may need to reboot after installation for the app icon to appear in your apps unless you prefer to fight the machine. The first run took a bit to start up, maybe because my wifi connection was delayed after reboot.)
GWD was released 2015 (https://en.wikipedia.org/wiki/Google_Web_Designer). How did we miss it? Possibly because we weren't interested in ads back then.
I had a go.
... and for some fun