I am currently a Marie Curie Research Fellow at the University of Bristol in the Bristol Interaction and Graphics team.
This is the CssLsd add-on for Mozilla Firefox.
Its purpose is to enable realtime control of the style of a webpage (only locally of course), by modifying the attributes of different tags.
It was co-designed by Studio Tabaramounien.
Screenshots of tweaked websites :
In order to do so, it receives and parses TCP OpenSoundControl messages on port 8327.
You can send these messages using Pure-Data.
Control messages have to be formatted this way :
Special messages are: