How to install Gnome Extensions

• Install GNOME Shell integration for Chromium and Chrome or Firefox
• then go to the extension page. For example: Screenshot Locations
• click the ON/OFF toggle on the right
• It'll show you a confirmation popup, click Accept.

Now re-login. Open Tweaks, go to Extensions, and configure your extenison.

In case you don't have Gnome Tweaks installed:

sudo apt install -y gnome-Tweaks

There are also a bunch of extension available in official repos which are in-house extensions from Ubuntu developers that you might find useful. You can install them with this command:

sudo apt install -y gnome-shell-extensions