View GitHub gists behind a proxy which blocks gist.github.com
Create a new bookmark with the following in the URL or Location field to directly view a gist:
javascript:(function(){var a=/^(?:.*\/)?([a-f0-9]+)$/.exec(window.location.href),b=a?a[1]:null;b&&(window.location.href="https://yi-jiayu.github.io/essence/#"+b);})()Essence gets the contents of a gist from api.github.com, so you're out of luck if that's blocked too.