Firefox memory leak on Windows

Generally, when you minimize a window the memory usage goes way down because that application isn’t active. Unfortunately, Firefox by default doesn’t adhere to this behavior. Here’s how to force it to.

Type the following into your address bar in Firefox:

about:config

You will see a window that looks similar to this:

- Right click anywhere in the window

- From the Menu choose Boolean

- Enter in the following text in “Enter the preference name” window as below

-> config.trim_on_minimize

- Once you enter the above tweak press enter

- You may get a pop up to select True or False

- Select True

or

- Double click on Config.trim_on_minimize to set True or False

You have to restart Firefox browser in order to load effects of the Tweak.

you should notice considerable change in memory trimming when minimizing Firefox browser to system tray.

Process Idle Tasks

Running Process Idle Tasks helps the system to complete pending tasks.

Below is the code:

%windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks

Copy the above code and paste it in Run command (Ctrl+R)

and press Enter

To perform idle tasks.

Alternatively you can create shortcut for this to perform easily. Follow the below steps to create shortcut on your Desktop.

1. Right-click on your desktop and Select New > Shortcut
2. In type the location of the item path: Enter below information
   %windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks
3. Click Next. In the next screen, Type a name for this shortcut: Ex: Clear Memory or Process Idle Tasks
   
4. Click on Finish

Your shortcut is now created and whenever you feel that your system is busy not responding to commands, just run this command and it should free up the system.