YITH WooCommerce Quick View will allow your customers to get a quick view of the product in which they are interested. The product details will be shown in a popup, so they don’t need to leave the page they are currently visiting.
You will only have to activate both plugins in order to make them work together. The combined use of these two plugins will insert the “Compare” button in the quick view popup of the product. This will give your customers the possibility to add a product to the compare list without abandoning the current product popup.
For more information about how to set up the YITH WooCommerce Compare plugin, check out the full documentation here.