Shop operators usually have a problem. The product images provided by retailers are mostly of different sizes. I would like to offer a web app that allows shop owners to upload product images of different sizes and have them spit out in the correct format. This does not mean that the page of an image changes. But the product images are placed, for example, on an area with 1000x1000 pixels. A product image that was originally 350x700 would then be in the middle of a 1000x1000px area. This process should happen against payment. In the best case, mollie payments can be attached. Possibly, the payment can be handled via WooCommerce, the webapp then runs on a subdomain. Thanks in advance!