This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Adds additional default image sub-sizes.


These sizes are meant to enhance the way WordPress displays images on the front-end on larger, high-density devices. They make it possible to generate more suitable srcset and sizes attributes when the users upload large images.

The sizes can be changed or removed by themes and plugins but that is not recommended.
The size "names" reflect the image dimensions, so changing the sizes would be quite misleading.


function _wp_add_additional_image_sizes() {
	// 2x medium_large size.
	add_image_size( '1536x1536', 1536, 1536 );
	// 2x large size.
	add_image_size( '2048x2048', 2048, 2048 );



User Contributed Notes

  1. Skip to note 2 content

    To remove those two image sizes you can use the code below:

    add_action( 'init', 'wpdocs_remove_default_additional_image_sizes' );
    function wpdocs_remove_default_additional_image_sizes() {
        remove_image_size( '1536x1536' );
        remove_image_size( '2048x2048' );

    Code can be added to functions.php file of the theme.

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