http://www.ghacks.net/2017/01/12/firefox-53-json-viewer-on-by-default/
origin - http://www.pipiscrew.com/?p=6449 firefox-53-json-viewer-on-by-default
http://www.ghacks.net/2017/01/12/firefox-53-json-viewer-on-by-default/
origin - http://www.pipiscrew.com/?p=6449 firefox-53-json-viewer-on-by-default