If you want to offload your combined and minified javascript and CSS files to a separate domain or a content delivery network (CDN), WP-Minify provides you with a handy set of filters (place this in your theme’s functions.php):
add_filter( 'wp_minify_js_url', 'offload_minify_js_css' );
add_filter( 'wp_minify_css_url', 'offload_minify_js_css' );
function offload_minify_js_css( $url ) {
return str_replace( 'domain.com', 'static.domain.com', $url );
}
Just thought I’d let you know I appreciate you taking the time to post this – I was close (using pre_replace as opposed to str_replace) but your solution works a treat.
I’m so glad you posted this! The W3 Cache plugin really wasn’t doing a good job and the CDN off linker plugins weren’t making any difference. This little bit of code makes a huge difference so thanks a load.