With the Udesly Adapter 1.7.1 you can set up the size of the product image into your Shopify website, using a simple custom attribute.
Insert an Image and enter the attribute:
dimension=the name of the size you wish or the size in pixels
Here’s a list of the most common sizes:
Example: We’d like to insert an image with size 160 x 160 px. What we have to enter as custom attribute is: