Changing product image sizes on both the catalog page and featured image

Hi, I am trying to change the size of the product images on my products pages. I have tried most everything I can think of. Looking online, it seems there should be somewhere in the them editor I can change the size. Any help would be appreciated.
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WooCommerce image size can be changed via WooCommerce > Settings > Products > Display

For more information about WooCommerce images please check WooCommerce documentation.

Let me know if you need further assistance with this.