Astra is the fastest-growing WordPress theme with over 2 million active installations worldwide. It's incredibly lightweight (under 50KB), loads in under 0.5 seconds, and works seamlessly with every major page builder including Elementor, Beaver Builder, and Gutenberg. Astra Pro unlocks advanced header builder, mega menus, WooCommerce customization, and white-labeling — the go-to theme for agencies building dozens of client sites.