Capital One Shopping
Not only is the Capital One Shopping browser extension free, but it can be used on all major browsers — Chrome, Firefox, Edge, and Safari. Once you have it installed, the extension will instantly find the best available coupons and discounts codes on the internet and apply the winner to your purchase at checkout.
The extension also compares prices among different Amazon retailers and sellers, helping you find the best deal available with no research required on your end. The Capital One Shopping extension even offers rewards while you shop that can be redeemed as gift cards!