pasting it into a graphics editor and saving as jpg? There are also screen grab utilities that will do this in onew shot.
Their site is not very informative.
I ran across a free online tool called Velocity Webshots that allows you to convert an HTML page to a JPEG right online... which I have never seen and didn't think it could be done.
http://webshots.velocitysc.com
I use images like this in several of my web sites, so it comes in real handy. And I can save them as different sizes so if I need a thumbnail or a larger one.
I give it two thumbs up!

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