How to restart Firefox with a single click

Here's how to restart Firefox and do not lose open tabs.

There are many occasions when you need to restart Mozilla Firefox. For example, when you enable some secret hidden feature in the Firefox browser via about:config such as "Hello" in order to use the WebRTC feature, you may need to restart it. Installing or uninstalling add-ons also means you have to restart it. While it is easy to close all tabs in Firefox manually and re-launch it, I would like to share with you a faster way which involves the built-in Firefox option.