Low res on additional images

Hi Zaynoodin,

Thanks for reaching out to us.

Thumbnail’s current size is 100px, if you want to increase the size please put those below PHP codes inside your child theme’s function.php and change the height and width number as px, and after adding those codes please don’t forget to regenerate your all thumbnails.

add_filter('woocommerce_get_image_size_gallery_thumbnail', function ($size) {
return array(
'width' => 100,
'height' => 100,
'crop' => 0,
);
});

Thank you