magento 2 resize gallery images in product page

Question

thanks in advance i need to resize the the product gallery images in product page magento 2

$all_images = $block->getGalleryImages()->getItems();
<div class="updated_all_images">
    <?php foreach($all_images as $child_new){ ?>
        <img src="<?php echo $child_new->getUrl(); ?>" >
    <?php } ?>
</div>

here images are loading in 1080px1400px, i need to make those images size(dimentions) to 450450