How To Make The Most of Firefox’s Session Manager

Tina Sieber 15-02-2012

firefox session managerRestoring browser sessions was a milestone in browser development. Meanwhile, all browsers offer this feature to some extent. Firefox allows you to restore previous windows and tabs, but it doesn’t come with an elaborate session manager. The aptly called Session Manager [No Longer Available] fills this gap, allowsing you to save and restore multiple sessions.


Session Manager is one of those apps that works wonderfully with just the default settings. However, a quick look under the hood reveals a host of potential custom settings and comprehensive features.

Session Manager Options

Let’s start this journey with the settings. After installing Session Manager, click the Firefox button and select Add-ons. In the Add-ons Manager, click the Extensions tab, find Session Manager in the list and click the Options button.

Under General, you can customize the default behavior of Session Manager. In the Startup & Shutdown tab, for example, you can determine how sessions should be loaded at startup or backed up at shutdown. Here you can also import sessions from Tab Mix Plus and Session Manager or import and export settings for Session Manager.


  • Set Session Manager to show your last browser session at startup, to get back where you left off as fast as possible.
  • Set it to back up the current session at shutdown; this way you can always return to accidentally closed tabs.
  • Glance over the settings under Saving & Restoring to understand how this works and amend the settings to your preferences.
  • Also familiarize yourself with the Undo Close, Advanced (change storage location, add encryption), SessionStore (enable crash recovery), and Logging options.

firefox session manager


Session Manager At Work

Once you have the basic settings down, it’s time to actually use the extension. Session Manager is listed as a menu item when you click the Firefox button. I have used Session Manager for a while, so there is a long list of various sessions. In the first menu, you will find your saved sessions, as well as a list of recently closed tabs and windows.

 session manager add on firefox

The sessions that are saved when you shut down the browser or when the browser crashes, can be found under Backup Sessions.

Via the Session Manager menu item you can save sessions and windows or load and manage existing sessions. Let’s pretend we want to load a session. When you click the respective menu item, a Session Manager window that contains all your stored sessions will open. Here you can view a list of tabs for each session and uncheck any tabs you don’t want to load, when restoring this session (red). You can also select whether to append or replace your current browser session (green). Via the button in the top right you can switch between different functions, for example to Rename or Group sessions (blue).


 session manager add on firefox


  • If you suffer from tabs overload, use Session Manager to save sessions while switching between different ‘roles’ in your life, for example social media checking, online shopping, (home)work, articles to read etc.
  • If your list of actively saved sessions gets too long, group them by category, using the Group feature.
  • If your browser session crashed, you will typically be shown the Session Manager before Firefox launches. If the crash was caused by a particular page, uncheck the respective tab before you open that last session.


Session Manager works great with default settings. However, it is a very comprehensive apps with a lot of useful features. When used to its full potential, you can store a lot of your regularly used tabs in sessions and groups, which will make Firefox faster while you are doing something else. While the extension offers so many features, it is neatly organized and rather intuitive to use. Consequently, Session Manager is on our list of Best Firefox Addons The Best Firefox Addons Firefox is famous for its extensions. But which addons are the most useful? Here are the ones we think are best, what they do, and where you can find them. Read More .

Do you tend to keep too many tabs open all the time? Maybe you can find some more valuable tips here:


If you are looking for a tool to restore tabs across computers, browsers, and even operating systems, check out TabCloud, reviewed here: How To Restore Tabs In Chrome & Firefox Across Machines With TabCloud How to Restore Tabs in Chrome & Firefox Across Machines With TabCloud Read More .

What are your tips and tricks for managing browser sessions?

Affiliate Disclosure: By buying the products we recommend, you help keep the site alive. Read more.

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  1. Patrick
    February 26, 2017 at 10:55 pm

    Since I started using Session Manager I have had to reload my OS (7 and 10) quite a few times and every time I LOOSE my sessions because I can not find how to SAVE them from one reload to the new load to a disk/flash/etc.
    Is there a way? or is the CLOUD the only say to save to a disk/flash.......

    • Tina Sieber
      February 27, 2017 at 12:38 pm

      Thanks for your feedback, Patrick.

      Firefox should store this information in your user profile, from where you can restore it. When you "reload" Windows 7 or 10, Windows should create a Windows.old folder on your system drive. If this folder is present, check it for the following folder: Windows.old > Users > [Username] > AppData > Local > Mozilla > Firefox > Profiles > [Profilename]

      Alternatively, press Windows key + R to launch the Run menu, and enter the following command to launch your current Firefox profiles folder and prepare a backup: %APPDATA%\Mozilla\Firefox\Profiles\

  2. John
    April 4, 2015 at 10:50 pm

    Love it.

  3. SBMe
    June 16, 2012 at 11:12 am

    Thanks for this. Been looking into this addon for Firefox the last few hours. I love Tab Mix Plus and have liked it's session manager. However I have over 7 separate Firefox's that I can run at the same time (usually only do 3), for instance; -p 3rdStable -no-remote or a Sandboxed one with a unique name and persona. I like to keep them to do specific things. I can have 50-100 tabs with each. This seems easier this way, I don't have FF crash anymore doing it this way, well it's been over a year since it has. I also didn't update to FF 13 right away, just waited until Flash issue was fixed with the 13.0.1

    However it's hard sometimes and I stray from that and I sometimes save a session that I want in another FF. I've copied and pasted them from TMP, but the more sessions I save the more complicated the session text file is to read. I don't do it enough and forget where I left off.

    This addon seems to be the fix for me. Can't wait to install a new Sandboxed Firefox to test it out.

    Thanks again.

  4. nikata che
    February 28, 2012 at 8:16 am

    Wow, this is really cool, I can keep and even backup many days session. As I know most of other browser can only restore the session you opened last time such as the ones in maxthon browser or Avant browser.
    I have installed it in my firefox browser and I'm considering also add it into the firefox engine in Avant. Don't know if chrome has such a extension,I will try to find it.

    • Tina
      February 28, 2012 at 7:48 pm

      Glad you like it!

  5. Sanam Jaleel
    February 19, 2012 at 3:21 pm

     wow this is very interesting...
    Now I will be able to access websites I visited days ago.....!