When you have the choice of multiple addons/extensions that can perform a certain task, is there a way to monitor their system resource use? To select the one which is the leanest.

I am sometimes using firefox on low-end devices. I feel that certain extensions are using more/less resources. But what’s the truth?

In linux system/task monitors, you can see processes “WebExtensions” running beneath firefox. Is this reporting extensions as name suggests? If so, is there a way to correlate them to specific add-ons?

Would also like to be able to know about what extensions are doing “in the background” vs when you are actively using them.

This is about desktop versions of firefox, not mobile.