It's possible: https://github.com/niklasvh/html2canvas

But.. I'm not sure it's going to work out too well. You'd probably do better off using a service like http://webthumb.bluga.net/home but it gets complicated quickly (although it's been a cpl years since I looked into this so things may have come along).

awesome, i'm looking into both right now

If you don't mind paying a little, I have used http://url2png.com/ for one of my sites and it works great.

yeah, I've checked them out - what's ur site?

it's also worth looking at PhantomJS for generating the screenshots yourself

thanks man, PhantomJS is looking pretty promising.

Can you give details on what resources you used to learn JS and build this?

I spent a ton of time on stackoverflow, quora, w3schools, api.jquery.com, and google. I also bugged my developer friends when I got really stuck. i also used bootstrap from twitter (http://twitter.github.com/bootstrap/).