wp_img_tag_add_srcset_and_sizes_attr( string $image, string $context, int $attachment_id )

Adds srcset and sizes attributes to an existing img HTML tag.



(string) (Required) The HTML img tag where the attribute should be added.


(string) (Required) Additional context to pass to the filters.


(int) (Required) Image attachment ID.


(string) Converted 'img' element with 'loading' attribute added.


File: wp-includes/media.php

function wp_img_tag_add_srcset_and_sizes_attr( $image, $context, $attachment_id ) {
	 * Filters whether to add the `srcset` and `sizes` HTML attributes to the img tag. Default `true`.
	 * Returning anything else than `true` will not add the attributes.
	 * @since 5.5.0
	 * @param bool   $value         The filtered value, defaults to `true`.
	 * @param string $image         The HTML `img` tag where the attribute should be added.
	 * @param string $context       Additional context about how the function was called or where the img tag is.
	 * @param int    $attachment_id The image attachment ID.
	$add = apply_filters( 'wp_img_tag_add_srcset_and_sizes_attr', true, $image, $context, $attachment_id );

	if ( true === $add ) {
		$image_meta = wp_get_attachment_metadata( $attachment_id );
		return wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id );

	return $image;


Version Description
5.5.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.