function disable_embeds_code_init() { 
  // Remove the REST API endpoint. 
  remove_action( 'rest_api_init', 'wp_oembed_register_route' ); 

  // Turn off oEmbed auto discovery. 
  add_filter( 'embed_oembed_discover', '__return_false' ); 

  // Don't filter oEmbed results. 
  remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 ); 

  // Remove oEmbed discovery links. 
  remove_action( 'wp_head', 'wp_oembed_add_discovery_links' ); 

  // Remove oEmbed-specific JavaScript from the front-end and back-end. 
  remove_action( 'wp_head', 'wp_oembed_add_host_js' ); 

  add_filter( 'tiny_mce_plugins', 'disable_embeds_tiny_mce_plugin'); 

  // Remove all embeds rewrite rules.
  add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' ); 

  // Remove filter of the oEmbed result before any HTTP requests are made. 
  remove_filter( 'pre_oembed_result', 'wp_filter_pre_oembed_result', 10 ); 
} 

add_action( 'init', 'disable_embeds_code_init', 9999 ); 

function disable_embeds_tiny_mce_plugin($plugins) { 
  return array_diff( $plugins, array('wpembed') ); 
} 

function disable_embeds_rewrites ($rules) { 

foreach($rules as $rule => $rewrite) { 
  
  if(false != = strpos($rewrite, 'embed=true')) { 
    unset($rules[$rule]); 
  } 
  
} 

return $rules; 
}Click To Copy