a 'site filter' to disable on sites like docs.google.com so your docs arent messed up

like these extensions do:

xkcd https://chrome.google.com/webstore/detail/xkcd-substitutions/jkgogmboalmaijfgfhfepckdgjeopfhk

ponify (recently broken & dead due to chrome update/changes) https://chrome.google.com/webstore/detail/ponify/kaelfbndbnpddlehfmbhjnphpjljegae
