These scripts increases the loading time of your website and are also responsible for your performance on Google Page Insights. The reason is these files have to be loaded before the requested webpage can load.
Autoptimize is a WordPress plugin programmed to automatically speed-up your website and save bandwidth by aggregating and minimizing JS, CSS and HTML.
It makes the process very easy for non-technical WordPress users. The plugin concatenates all scripts and styles, minifies and compresses them, automatically expire headers, caches them, moves styles to the page head, and scripts to footer of your website. It also automatically minifies the HTML code making your webpages light and fast.
How To Autoptimize Your WordPress Site?
You may also specify your CDN blog root directory URL to enable CDN for images referenced in the CSS. There are advanced options too, available for tailoring the plugin to meet specific needs of your website.