This is a list of performance tweaks that will become default for All VIP sites You can call it directly in your theme until they are enabled globally
Dequeue wp-mediaelement.css for sites which don’t use the playlist shortcode and thus don’t need the stylesheet
Use this function to disable the loading of performance tweaks
Conditionally dequeues the geo-location-flair.css
Disables the WordPress.com-specific Customizer and Custom Design
Allow VIP themes to disable global terms on WordPress.com.
Helper function for validiting and sanitizing values for crop parametr used in photon URLs