SEMGURU – A Web 2.0 Blog

Firefox Memory Optimization

Posted on: June 29, 2009

If you want to reduce the amount of memory used by Firefox in Windows here’s a little trick:

Firefox Memory Optimization

  • Open Firefox browser, go to address bar, type about:config and hit enter
  • You’ll see a page full with text under 4 columns: Preference Name, Status, Type, Value
  • Right-click anywhere on that page and select New -> Boolean
  • You’ll get prompted to enter a Preference Name – enter this:config.trim_on_minimize and hit enter
  • You’ll be prompted for a value – select True and hit enter
  • That’s it – close Firefox and open it again!

Now, whenever you minimize your Firefox, the amount of memory used will be reduced to approximately 20%.

If you want to test it yourself, follow these steps:

  • Open Task Manager (CTRL+ALT+DEL)
  • Load several pages into Firefox and watch the memory usage (going up)
  • Minimize Firefox and see what happens!

Enjoy!

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