how optimize CDN without using plugins

Question

i need help for optimizing my wordpress website without using plugins incloding wp-total-cache or wp-super-cache.check this link https://gtmetrix.com/reports/akhbartop.ir/fF37Flwa my website needs otimize in Use a Content Delivery Network (CDN) and Configure entity tags (ETags) also i cant use MAXCDN :) please offer another ways

Answer 1

You get 94% / 87% so what seem to be the problem?

The only thing i can thing of is the 7.0s load time which is ok but a bit long..

I have also checked your website on Google PageSpeed Insights and the results warn't too bad.

1. You need better servers, fast servers
2. Try combining your JS files and codes and load them in the footer before the tag ends.

TIP: The only JS file you should keep in your header is the main jQuery JS

Answer 2

Here is one

// Defer parsing of JavaScript files.
function any_page_first_defer_javascripts ( $url ) {
    if ( FALSE === strpos( $url, '.js' ) ) {
       return $url;
    }
    return "$url' async='async";
}
add_filter( 'clean_url', 'any_page_first_defer_javascripts', 11, 1 );

Here is another one

// Remove Query strings from Static Resources. 
function any_page_first_remove_script_version( $src ){
    return add_query_arg( 'ver', false, $src );
}
add_filter( 'script_loader_src', 'any_page_first_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', 'any_page_first__remove_script_version', 15, 1 );