If you want a DIY version of this, try ImageMagick's compare command: compare bag_frame1.gif bag_frame2.gif compare.gif Documentation: http://www.imagemagick.org/Usage/compare/ reply no_gravity 2 hours ago Interesting. And to render the html you can use cutycapt. Which is in the Debian repos too. I just tried it, and this rendered a nice diff of two pages for me: cutycapt --url=http://www.xyz.com/1 --out=1.png cutycapt --url=http://www.xyz.com/2 --out=2.png compare 1.png 2.png diff.png reply easytiger 2 hours ago Now make it a webservice and charge $200/month! reply programmernews3 1 hour ago First part already done: http://archive.is/ reply prottmann 1 hour ago apt-get install the services and use them on my server ;-) reply