Coupon codes are digital vouchers that shoppers can apply during online checkout to receive instant discounts, free shipping, or special bonuses. Whether it’s a percentage off, a fixed amount off, or a buy-one-get-one-free deal, coupon codes make saving money easy and accessible. They’re commonly shared through retailer websites, email newsletters, and coupon platforms, helping customers reduce costs on everything from groceries to tech gadgets. Quick to use and widely available, coupon codes are a smart way to make every purchase more budget-friendly.