firefox - How can I unload a tab manually?

Firefox has a setting "Don't load tabs until selected" (see How do I make Firefox 13 Load All My Tabs on Startup or when Resuming Reload). I like that behaviour.

I am searching for a way to "deload"/deactivate a tab manually for a session (until I reload it).

It should stop all running JavaScript functions and plugins (like Flash). The whole webpage content may disappear until I reload/re-activate the tab, but that is not a requirement. The title has to be displayed as tab label (like it is the case with the startup setting, too).

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The workaround would be to restart Firefox and don't switch to the tab I want to be deactivated. This is pretty annoying, of course.

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EDIT: Here is what I found so far

Answer

In one of the links you referenced at Tab Utilities: Feature Request, there is already an answer from the developer (scroll down to comment no. 4) on how to do this. The answer is to:

• Add the Restart Tab item to the context menu.

Why it's called "Restart Tab" and not "Unload Tab", I don't understand, but he says you can just change it if you want. Set:

• extensions.tabutils.menu.context_restartTab.label to "Unload Tab".

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By the way, at the moment it only works on tabs that are not selected/focussed. In other words, if you do "Restart Tab" on the currently open tab, it will just reload. You have to switch to another tab, then right-click on the tab you want to unload, and choose "Restart Tab".

Here are the instructions from the developer, I updated them a little:

1. 
   

   Set browser.sessionstore.max_concurrent_tabs to 0 in about:config. (BarTab Lite or Load Tabs Progressively extension should also work.) [ the above is outdated, in current versions of Firefox, go to preferences/options for Tabs, and check "Don't load tabs until selected". ]

   
   


2. 
   

   Unload tabs manually with Restart Tab or Restart All Tabs menuitem. [ first you have to make sure the "Restart Tab" item is added to the context menu, in Tab Utilities preferences/options -> Appearance -> Menus -> Tab Context Menu ]

   
   


3. 
   

   Unload tabs automatically after a specified period of inactivity with extensions.tabutils.restartAfter option (minutes).

   
   


4. 
   

   Tag bookmarks with "norestart" to make an auto-unload black list.