Firefox Back Button Tweak

Firefox uses caching to increase browsing speed. This feature is enabled in its back button. However, clicking the back button results in more memory usage.

Did you know that you can decrease Firefox memory usage while using the back button? Here's how:

1. Open Firefox, type 'about:config' (exclude the quotes) and press enter.
2. In the Filter column, type 'browser.sessionhistory.max_total_viewers' and then double click the entry.

3. In the 'Enter integer value' box, replace -1 with 0, then click OK.

4. Restart Firefox and see the difference.