http://aezell.wordpress.com/2009/02/13/screenshot-a-url-with-python-and-qt-and-webkit/ http://www.blogs.uni-osnabrueck.de/rotapken/2008/12/03/create-screenshots-of-a-web-page-using-python-and-qtwebkit/
http://code.google.com/p/pywebkitgtk/
keyword: webkit html2image webkit2png etc.
http://www.rkblog.rk.edu.pl/w/p/webkit-pyqt-rendering-web-pages/