Disable Divi Image Size Generation On Upload

ddisou.php

/*
 * @snippet       Disable Divi Image Size Generation On Upload
 * @author        https://gist.github.com/Acephalia
 * @caffeinate    https://buymeacoffee.com/acephaliax
 */
 
 function disable_divi_image_sizes() {
    // Remove all image sizes registered by Divi
    remove_image_size('et-pb-post-main-image'); // Divi's post main image size
    remove_image_size('et-pb-portfolio-image'); // Divi's portfolio image size
    remove_image_size('et-pb-portfolio-module-image'); // Divi's portfolio module image size
    remove_image_size('et-pb-gallery-module-image'); // Divi's gallery module image size
    remove_image_size('et-pb-fullwidth-image'); // Divi's fullwidth module image size
    
}
add_action('after_setup_theme', 'disable_divi_image_sizes');

// Disable WordPress intermediate sizes too
function remove_default_image_sizes( $sizes ) {
    return array();
}
add_filter( 'intermediate_image_sizes_advanced', 'remove_default_image_sizes' );

For Reddit thread: https://www.reddit.com/r/divi/s/GEC7ANmEkd
Support the support: https://buymeacoffee.com/acephaliax