Free Etags File
Download the free Etags file mentioned in this video here.
Download Ninja Stack
Download the complete htaccess file for parts 1-3 of this tutorial for the price of a beer! Fix GZIP, Leverage Browser Caching, Keep-Alive, Configure Entity Tags, Serve Resources with a Far-Fetched Expiration
ToolKit For Elementor
After helping thousands of Elementor users with performance questions, we created ToolKit for Elementor (which already has this built-in)