Quote:Mozilla is working on integrating a Task Manager of sorts into the Firefox web browser. I looked at Mozilla's plans back in October 2018; basically, what Mozilla wanted to do back then was to replace the existing about:performance page with a new page that would highlight open tabs, extensions, and other content, and reveal the memory usage and energy impact of each loaded element to the user.

Users would get options to deal with loaded elements, e.g. close tabs, to deal with content types that use a lot of memory or energy.

Mozilla launched the Task Manager in Firefox 64.0 officially. It listed open tabs and add-ons, and the energy impact of each. While that is useful information, the lack of memory readings made the Task Manager less useful at this point in development.

In Firefox 65, memory readings are added to the Task Manager to make it more useful. Firefox 65 isscheduled to be released on January 29, 2019.

Firefox users may load about:performance in the browser directly to display the loaded components in the browser.

Full reading: https://www.ghacks.net/2019/01/09/firefox-65-task-manager-with-memory-readings/