How to remove unnecessary scripts and CSS files from a theme?

Not all scripts and CSS files that themes and plugins use are needed. So there is optimization potential here, which is especially advantageous when loading the website.

1.) The first step is to find out the ID. This is best done with the Inspector.

<link rel='stylesheet' id='default_styles-css' href='' type='text/css' media='all' />

2. If the ID is not displayed, you can help yourself with the following script in the functions.php and then read the ID with the inspector in the head area.

  Get Script and Style IDs
  Adds inline comment to your frontend pages
  View source code near the <head> section
  Lists only properly registered scripts
function shapeSpace_inspect_script_style() {
  global $wp_scripts, $wp_styles;
  echo "\n" .'<!--'. "\n\n";
  echo 'SCRIPT IDs:'. "\n";
  foreach($wp_scripts->queue as $handle) echo $handle . "\n";
  echo "\n" .'STYLE IDs:'. "\n";
  foreach($wp_styles->queue as $handle) echo $handle . "\n";
  echo "\n" .'-->'. "\n\n";
add_action('wp_print_scripts', 'shapeSpace_inspect_script_style');

3. If the IDs of the desired elements are known, the actual part comes in which these are removed.

function disable_scripts_styles() {
  if (!is_page('checkout') && !is_page('purchase-confirmation') && !is_page('purchase-history') && !is_page('transaction-failed')) {
add_action('wp_enqueue_scripts', 'disable_scripts_styles', 100);

If the above script does not work, the following is an alternative:

add_action( 'wp_enqueue_scripts', 'yith_wcbm_dequeue_google_fonts',999 );

function yith_wcbm_dequeue_google_fonts(){
    wp_dequeue_style( 'HIER KOMMT DIE ID BEZEICHNUNG HINEIN' );
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  • Developed 2023
  • CMS WordPress
  • Status Completed

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