优化——有没有办法找到并删除所有html页面上未使用的CSS和Javascript ?

My website has many webpages and I am trying to clean up my stylesheets and scripts. About 10% or more of each js/css are not being used by any of the html pages in my website. What I need is to remove the common unused and redundant css and js. I did a bit of research and found My website has many webpages and I am trying to