http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/man-page/privoxy-man-page.html
Privoxy uses the concept of actions in order to manipulate
the data stream between the browser and remote sites. There are various actions available with specific functions for
such things as blocking web sites, managing cookies, etc. These actions can be invoked individually or combined, and
used against individual URLs, or groups of URLs that can be defined using wildcards and regular expressions.