Memory Restart Firefox Add-on

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What’s New


  • Changes needed for Firefox 29.


  • Bug fix. Auto restart broken when minimize memory is enabled.


  • Performance fixes.


  • Added configurable memory spike notification. Defaults to 250MB.
  • Removed prompt when restarting from File menu.
  • Automatic restart delay shortened to 30 secs from 60 secs.
  • Internal improvements.


  • Fix for high CPU usage on every update (refresh interval).


  • Support for Firefox 26+.
  • Right clicking on add-on bar no longer restarts.


  • Less aggressive Memory Minimize functionality. Only minimize memory when the threshold is reached and it is more than 10 minutes since the last minimize memory. Thanks akromic.


  • Added option to automatically minimize memory when threshold is reached. This functionality is the same as clicking the “Minize memory usage” in about:memory.
  • Reverted minimum threshold validation, which appears to have prevented Mac users from updating their memory threshold settings.


  • Set 250MB as the minimum threshold for auto restart. This lessens the possibility of Firefox from restarting on startup.
  • We give Firefox 60 seconds before we automatically restart. This should help during cases where Firefox restarts automatically on startup.
  • Added File -> Restart menu option.
  • Displays MB instead of Mb. Thanks Areed.
  • Reverted back to using Ci.nsIAppStartup.eAttemptQuit.
  • Internal fixes.


  • Support for Firefox 13.
  • Configurable refresh interval.
  • Using Ci.nsIAppStartup.eForceQuit instead of Ci.nsIAppStartup.eAttemptQuit. If this causes any issues, please let us know.


  • No prompt option.


  • Support for Firefox 10.


  • Support for Firefox 7.


  • Support for Firefox 6.


  • Bug fix. Auto restart feature works now.


  • Bug fix. Add-on now works properly even if the toolbar button is removed by the user. Thanks TechnoMage for the detailed bug report.


  • Added a toolbar button.
  • Displays a dialog confirmation before restarting Firefox.
  • Users can customize the font color.
  • Added the option automatically restart Firefox when memory threshold is met.
    ** Be careful not to set the memory threshold to a very low number or that might restart Firefox as soon as you open it.


  • Supports Firefox 4.


  • Users can set the memory threshold. The default is 500Mb.


Memory Restart is an open-source Firefox add-on that allows you to quickly restart Firefox if memory usage is too high. Firefox users can see the memory usage in the add-on bar or the toolbar tool-tip. If memory usage reaches a certain threshold, the add-on bar display and the toolbar icon will turn red.

This add-on uses the same underlying code as about:memory. Memory reported by about:memory is less than the memory you will see consumed by the Firefox when you look at top or task manager.

Toolbar icon courtesy of Ken Saunders.