There are various reasons why photos should be resized.  For example, you may have a perfect frame for your picture. But your original image is too large (or too small). In that case, resizing is the ideal solution!  Another example, which is more relevant to business, is resizing for eCommerce stores. If your product image does not fill 80% of the viewport, it will not be compatible with the store guidelines. Thus, image resizing helps you achieve the perfect size! All of these are crucial reasons to use an image resizing service. Some apps can help you do this yourself, but the output may not be as good as using a professional image resizing service provider company.