memory

[Anonym2025]

I have been a loyal firefox user for many years, but you are about to lose me.  I have to keep task manager on the screen to make sure that firefox is not going to overload memory.  I've tried everything.  I use firefox because I thought it was secure, but how can it be secure when it has all these unknown processes running? 

[jscher2000]

Hi, Firefox has a built-in task manager to track down which tabs/sites and which internal processes are using a lot of resources. You can call that up using Shift+Esc, or type/paste about:processes in the address bar and press Enter/Return to load the page.

If you are on Windows, the system task manager has a Details panel which lists the process ID for each firefox.exe process (in Windows 7, it was the Processes tab). You can check that all the processes listed in the Windows Task Manager are also listed in Firefox's about:processes page. If Windows has more, it could indicate a hidden instance of Firefox running (usually a very bad sign).