Mozilla has removed the “about:performance” page that shows memory and energy impacts on a per-tab basis in Firefox 116. The page now simply redirects to the preferred “about:processes” page .
Mozilla added the about:performance page in Firefox to report the memory and CPU usage of web pages and add-ons. After the feature introduction, Firefox referred to it as Task Manager in the “More tools” menu.
The about:performance page has allowed users to sort tabs and add-ons by Energy Impact or Memory.
Mozilla has launched about: Processes in Firefox which displays information about Firefox processes and their CPU and memory utilization.
Both about:performance and about:proceesses were available for more than 4 years. The former has bitten the dust now in 2023.
The organization found about:processes is much better than about:performance. To inform users os this change, the former now redirects to the latter.
about:performance makes it easier for users to sort memory usage by tab where as this is not straightforward with about:processes. Firefox’s internal page on performance is simple whereas the internal page on Firefox Processes is more complex.
As of now, in Firefox 116, the following changes can be seen:
- When you visit about:performance page, you’ll be redirected to about:processes
- The Task Manager present under the More Tools sub-menu also takes you to about:processes
Mozilla has removed all references to about:performance in Firefox’s code. The last time you can access about:performance is in Firefox 115.
What’s your take on this? Which page did you found more useful, about performance or about:processes? Let us know in the comments below.
Final words: Mozilla has removed and replaced the old performance monitoring tool with about:processes that focuses on processes ,the change is expected to take effect with Firefox 116 release.