This Magento 2 Sold Out Label extension is used to put a sold-out label over the default image when product quantity is out of stock. It displays a sold-out label on the product list page automatically when the quantity reaches zero.

Using this extension store owners can set labels as either text or image. It provides options to set positions of out-of-stock labels like Top Left, Top Center, Top Right, Middle Left, Middle Center, Bottom Left, etc.

In addition, this extension also provides options to set the width and height of the label so it will fit perfectly on product images.

More details: https://www.solwininfotech.com/product/magento-2-extensions/sold-out-label-magento-2/