<?php
/**
* Disable Unnecessary Generated Image Sizes
* Author: Knol Aust
* Gist Keywords: wordpress, media library, images, image sizes
* Description: WordPress automatically generates multiple image sizes upon upload. This code disables unnecessary standard image sizes to reduce server/CDN bloat. Regenerate images after implementing.
*/
/**
* Disable generated image sizes.
*
* @param array $sizes Current image sizes.
* @return array Updated image sizes with unwanted sizes removed.
*/
function ka_disable_image_sizes($sizes) {
// Remove or comment out any sizes you want to keep.
// Keep in mind: some themes add additional sizes for specific purposes.
// This function only removes standard WP sizes.
unset($sizes['thumbnail']); // Disable thumbnail size
unset($sizes['medium']); // Disable medium size
unset($sizes['large']); // Disable large size
unset($sizes['medium_large']); // Disable medium-large size
unset($sizes['1536x1536']); // Disable 2x medium-large size
unset($sizes['2048x2048']); // Disable 2x large size
return $sizes;
}
// Hook to remove generated image sizes.
add_action('intermediate_image_sizes_advanced', 'ka_disable_image_sizes');
// Disable scaled image size.
add_filter('big_image_size_threshold', '__return_false');