"For starters, Shutter sports a tabbed interface, so
you can work with several screenshots at the same time. Like any
screenshot utility worth its salt, Shutter allows you to grab a
selected area, a window section, and a full window. Besides that,
Shutter has a rather nifty feature that allows you to take a
screenshot of an entire Web page. To do this, press the Web button
in Shutter's main toolbar, enter the URL of the page you want to
grab, and press Execute."