Extensions
Tool to enable / disable GNOME Shell extensions
GNOME Extensions handles updating extensions, configuring extension preferences and removing or disabling unwantedextensions.
This package contains a tool which users who use Shell extensions can use to toggle them on and off, and access their preferences.
How to install Extensions in Ubuntu
If you are on a supported distro like Ubuntu, Linux Mint, elementary OS etc. you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install gnome-shell-extension-prefs in Ubuntu
sudo apt install gnome-shell-extension-prefs
Extensions Screenshots

