Slideshow
The Download Now link will redirect to the extension page. To install the extension directly, click on the install button on the page.
Publisher's Description
From Google Chrome extensions:
Whenever you see the slideshow icon in the address bar, just click the icon to transform the page you're on into a slideshow. To go back to the standard view, click the x button at the top of the page. The slideshow currently appears for Picasa, Flickr, Facebook and Google Images.