Prevent Firefox From Hogging RAM While Minimized

You can set Firefox to reduce the amount of RAM or memory it uses while it is minimized with this tweak.

1. Type about:config in the address bar and press Enter.

3. click ok

2. Now Right-click any area in the window and click New > Boolean.

3. In the box that pops up enter config.trim_on_minimize and press Enter.

4. Select True and press Enter.

you've done man