A mini-tip on viewing images quickly in a new tab in Firefox. Useful for web devs who want to look at the URL of an image quickly.

As an example, here's the Youtube webpage of the owner of Maru the Cat:

ff3-middle-click-step-1

To open the thumbnail image of Maru in a new tab, right-click the image, and then middle-click the View Image item from the context menu:

ff3-middle-click-step-2

It should open up in a new tab:

ff3-middle-click-step-3

You can also do the same for background images (middle-click View Background Image from the right-click context menu).