Consider Fixing:
Eliminate render-blocking JavaScript and CSS in above-the-fold content.
This is what can do to overcome the aforementioned problem.
Paste this set of code into the functions.php of your WordPress.
function defer_parsing_of_js ( $url ) {
if ( FALSE === strpos( $url, '.js' ) ) return $url;
if ( strpos( $url, 'jquery.min.js' ) ) return $url;
return "$url' defer='defer";
}
add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );
Then click Update File button.if ( FALSE === strpos( $url, '.js' ) ) return $url;
if ( strpos( $url, 'jquery.min.js' ) ) return $url;
return "$url' defer='defer";
}
add_filter( 'clean_url', 'defer_parsing_of_js', 11, 1 );
Now check with Google PageSpeed Insights see if there is any change of page loading speed.
Caution: Follow this tutorial at your own risk. I am saying this because functions.php of WordPress is very sensitive.
If you paste any code that is not "acceptable", you will be locked out of your own site!
* Anyway, here is the tutorial on how to fix WordPress Function.php Error: Cannot Log-In And Site Disappear.