Open a few tabs in Firefox and you’ll soon realise that it’s difficult to figure which tab relates to the page you require. Open a few tabs from the same website and they all look the same. Opera has a cool function that enables you to quickly preview a tabbed window by holding your mouse over the tab. By ‘preview’, we mean that you can see a preview of the open website within the tabbed window.

The difference between Firefox and Opera is that Firefox only offers a text description preview of the open tab. Opera will show a visual preview.

Tab Scope is a Firefox extension that will address this problem by displaying a preview of the tabbed window when you hold your mouse over the tab. Better still, this is a real-time preview, so if the page changes or is updated, you see the page ‘as is’ rather than a snapshot image. You can also click on links within the preview and so much more. This functionality should be included within Firefox as standard, which makes this an essential extension.

Note that this extension only works with the Windows version of Firefox.