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Tab Sidebar is a Firefox Extension.

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

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Let’s say you’re at work and checking your online financial account.

You really don’t want your co-workers to know what you’re doing.

For example, let’s say you use Merrill Lynch:

 

 

As you can see, any passerby will be able to see the Merrill Lynch icon and title in the tab.

The Page Title Eraser extension can help conceal what you’re doing.

Just hit CTRL+SHIFT+ALT+H on your keyboard, and the Tab’s title disappears:

 

 

If that keyboard combination is uncomfortable for you, you can always use the provided toolbar button instead. Just go to the top of your browser and click View > Toolbars > Customize.

Then locate the “pte” button and drag it to your toolbar:

 

 

But what about the icon?

Sure, the Title of the tab has been removed, but anyone can recognize the Merrill Lynch icon.

Just go to the extension’s Options Window, and check the box labeled “Hide Tab icons…”

You can even choose your own title for the tab. In this case we’ll call it ESPN:

 

 

Now when a co-worker passes by, they’ll think you’re looking at ESPN, when in reality the tab contains your financial interactions: