Zooming all windows at once exists as a Gnome shell extension. https://extensions.gnome.org/extension/7263/better-desktop-zoom/ https://extensions.gnome.org/ex

Zooming all windows at once exists as a Gnome shell extension. https://extensions.gnome.org/extension/7263/better-desktop-zoom/ https://extensions.gnome.org/extension/7263/better-desktop-z... Probably it would be possible to zoom one window at once as a shell extension.