Tab Sidebar

You can download it from the developer’s website or the Firefox Add-Ons site.

This extension allows you to view thumbnails of your open tabs in your browser’s sidebar.

There are several ways to open the Tab Sidebar. First, you can hit CTRL+Shift+E on your keyboard.

Or, you can go to the the top of your browser window and click: View > Sidebar > Tab Sidebar:

Or finally, you can manually place the Tab Sidebar button on your toolbar. To do so, go to View > Toolbars > Customize and locate the button:

Then left-click on the button and drag it to your toolbar.

Whenever you open Tab Sidebar, you’ll see thumbnail snapshots of all your open tabs. The site that you are currently viewing will be highlighted. In the example below, you can see that I had 3 open tabs:

These thumbnails are actually more than just snapshots, they’re a live representation of the page. In other words, as you scroll down one of the pages, you’ll notice the change reflected in the tab sidebar as well.

You’ll also notice navigation buttons on the bottom of each thumbnail. You can refresh each page, and navigate forward and backwards, right from the sidebar!

Finally, here is the Options Window for the Tab Sidebar extension: