Add [wpgv_giftcard_standard] (or the older [wpgv_giftcard]) to a page to sell the classic PDF vouchers. Each Giftcard standard template decides whether it is presented in grid view (cards with image) or list view (one row per template); see the “View mode” column in Gift Cards Pro → Giftcard standard Templates.
The form asks for the value (within Minimum/Maximum voucher value), buyer and recipient, an optional message and the payment method, then generates the PDF voucher.