Hello,
Do you want to change the image size on the shop page? Because I don’t understand your question.
If yes then 1) go to Theme Options > Custom CSS add the below code
.content-product .product-content-image img { width: auto; }
2) Go to Theme Options > WooCommerce > Product images > change the width of the thumbnails.
We would recommend using high-quality source images (min 600px width) with the same size for all the images to have nice-looking grid on the shop page.
Regards
