Excellent! Thanks for the tip. I'm currently using url2png and imagemagick. URL2PNG is an excellent service, but probably won't be economically feasible for me, long term, when I get to trying to scale my app. ( I'm working on a visual bookmarking app with screenshot thumbnails serving as tiles on a draggable corkboard interface. You can double-click the tiles to open the target url in a draggable iframe. Example: http://beta.mindcast.com/ui/4k82yb5zb2ov )