How in the Tech

Optimize the Number of Tabs Firefox Can Restore

By Adam Myers ⋅ December 23, 2008 ⋅ Tags: Firefox

Furthering my article the other day on optimizing Firefox by reducing the session store frequency, I have another minor tweak today for everyone’s favorite browser. Firefox 3 has a great feature that I’m sure very few actually know about and use regularly – restoration of tabs that were closed, whether on accident or deliberately. It shocked me to find out that Firefox actually tracking the last 10 tab closures in order to provide the undo process. Now, I’m the first to admit that I’m probably not the most typical of Internet users but I can’t see why you would ever need more than a couple tab closure undos. Certainly, 10 seems overkill and wasteful to me. While I doubt that tweaking this parameter has any noticeable impact on your Firefox performance, since when has tweaking and optimizing ever listened to the law of diminishing returns?

1. Once again, in a new Firefox window/tab, type about:config in the address bar.



2. From the Filter box, type browser.sessionstore.max_tabs_undo.



3. Double click on the result and change the value to whatever you find suitable. I’m suggesting just 2 or 3!