https://developers.google.com/speed/docs/insights/PrioritizeVisibleContent,recommends,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools
http://addyosmani.github.io/basket.js/,basket.js,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools
https://jonassebastianohlsson.com/criticalpathcssgenerator/,Penthouse online,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools
http://www.jamescryer.com/2014/06/12/grunt-pagespeed-and-ngrok-locally-testing/,ngrok,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools
https://chrome.google.com/webstore/detail/pagespeed-insights-checke/mkjmodmicmpjedhoekkmafdgpocdkbna?hl=en,PageSpeed Insights Checker for mobile extension,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools
https://addyosmani.com/blog/removing-unused-css/,other,https://github.com/addyosmani/critical-path-css-tools#readme,Critical-Path Tools