WordPress Disable responsive image support

/** * Disable responsive image support */ // Clean the up the image from wp_get_attachment_image() add_filter( 'wp_get_attachment_image_attributes', function( $attr ) { if( isset( $attr['sizes'] ) ) unset( $attr['sizes'] ); if( isset( $attr['srcset'] ) ) unset( $attr['srcset'] ); return $attr; }, PHP_INT_MAX ); // Override the calculated image sizes add_filter( 'wp_calculate_image_sizes', '__return_false', PHP_INT_MAX ); // Override the calculated image sources add_filter( 'wp_calculate_image_srcset', '__return_false', PHP_INT_MAX ); // Remove the reponsive stuff from the content remove_filter( 'the_content', 'wp_make_content_images_responsive' );