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firefoxFirefox 4 beta is out and has got a lot, really a lot of new interesting features which are going to change the way we use the Red Fox. A very useful feature, List all Tabs,  allows you to display and preview thumbnails of  open tabs in one single window. Let’s see how   to turn it on (enable) thanks to a simple hack! 

  1. Open Firefox 4.
  2. In the Address bar, type about:config and press Enter.
  3. When prompted, press the button labeled I’ll Be Careful, I Promise.
  4. In the filter field, type alltabs.
  5. In the big pane, you should be able to see the browser.allTabs.previews option.
  6. Double click it to set its value from False to True.
  7. Restart your Firefox.
  8. Look at the right side of Firefox, right where the tabs finish. You will notice a new squared icon which, if clicked, will show you all the open tab in one window!
  9. Enjoy!

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One Comment to “How to Turn On and Enable All Tab Preview Feature in Firefox 4”

  1. fifty9dunes Says:

    great post – still works in release v. 4 – anyone know of a keyboard shortcut for this one??


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