Another isssue is that pictured dont look so great when are small on first page for example.
What is the max resolution of a picture on main picture of a product that can be more clear when you have it on thubnail on first page for example and what is the max revolution that can put it and you can make zoom to make it even better on main product page.
I send you picture
Basically, the product images are controlled by WooCommerce and the WoodMart theme doesn’t influence this. The size of the thumbnail you set should be larger than the size of the product thumbnail displayed on the shop page. If the thumbnail size is smaller than what the default size expects, it may appear blurry or not display correctly.
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