Hello,
If products have featured images of different size the product grid items will have different height and the inner content, such as title, price and “Add to cart button” would be on different levels. The best solution is to upload images of equal size and proportion, however, considering a great deal of products on the site, such a solution cannot be always applicable.
In order to settle the issue, navigate to Appearance – > Customize -> WooCommerce -> Product Image and find the size option for product page image as well as images in a grid:
Main image width – Image size used for the main image on single product pages. These images will remain uncropped. Image width used in demo sites are: 600px;
Thumbnail width – Image width used for products in the catalog, Image width for the catalog is 350px;
There is no required or recommended image size for product or other purposes. Image should be big enough to have a nice view. Just for information we provide images sizes applied in our demo:
Product main image: width: 800px; height: 1200px;
Blog post: width: 1024px; height: 720px;
Page title background: 1200px; height: 400px;
Best Regards
.
