On Mon, Mar 10, 2014 at 10:04 PM, Jon Robson <jdlrobson@gmail.com> wrote:
My vision of how this might work is we have an automated tool that
visits a list of given pages on various browsers, take screenshots of
how they look and then compares the images with the last known state.
The tool checks how similar the images are and complains if they are
not the same

I have build something similar before. It is doable with our existing Jenkins+Selenium+Ruby test infrastructure. Something like this:

- open a page
- take a screen shot
- compare (pixel by pixel) with the previous screen shot
- report if the more than x percent of the pixels are not the same

Repeat for interesting pages and browser+version/OS+version combinations.

Ċ½eljko