A fresh GeneratePress install adds under 10 KB (gzipped) to your page—making it one of the fastest themes out there
The basic theme is free, with excellent options via WordPress Customizer: layout, typography, colors, menus, widgets, etc.GeneratePress Premium (a plugin) adds modular extras: theme builder (GenerateBlocks), advanced layout controls, WooCommerce support, site library, sticky menus, off-canvas panels, and more