Server side web page screenshots
Here's a way to get screenshots of web pages on Debian system in a few simple steps.
Here's the info source:
http://askubuntu.com/questions/421980/how-to-take-screenshot-of-complete-webpages
Step 1 - install xvfb and libicu48:
sudo apt-get install xvfb
sudo apt-get install libicu48
Step 2 - install webkit:
sudo apt-get install subversion libqt4-webkit libqt4-dev g++ cutycapt
Step 3 - Get a screenshot:
xvfb-run --server-args="-screen 0, 1270x768x24:32" cutycapt --url
=http://www.yahoo.com/ --out=/tmp/yahoo.png --delay=3