Shopify – Auto fill discount code on checkout page By tmbr Locate this line of code in your cart.liquid template [php] [/php] Directly below that line of code you need to place something like this [php][/php] Where “RESELLERDISCOUNTCODE” is your discount code. If you want apply this to only a specific group of customers. you can use tags to create a customer group and then only apply the code to customers who are in that group. [php] {% if customer.tags contains ‘RESELLER’ %} {% endif %} [/php] Add coupon code from URL This will allow you to add a coupon code to any URL and auto populate that coupon code at checkout. Example URL – https://myshopifystore.com?coupon=MYCOUPONCODE you can add coupon=MYCOUPONCODE to any URL on your store Locate this line of code in your cart.liquid template [php] [/php] Directly below that line of code you need to place something like this [php][/php] Make sure you are including jquery and Jquery cookie in your theme. Your theme probably already has jquery so you would just need to include jquery-cookie Jquery: https://jquery.com/ jquery-cookie: https://github.com/carhartl/jquery-cookie This Gist should be a solid building block to customize for your specific needs and should be added at the end of your layout.theme file before your