Checkout.liquid
How to enable Shopify Plus checkout.liquid customizations
My upsell isn’t showing in my checkout, how do I get it to show?
How to upsell to a subscription in checkout and cart
How to get started: checkout upsells > checkout.liquid
How do I test a checkout upsell on a draft theme?
How to design checkout upsells with custom CSS
How to show an upsell on a specific page of the checkout
How do I make my checkout upsells show outside of the collapsed Order Summary on mobile?
How to manually install the checkout widget to the checkout.liquid theme file
Checkout Extensions
How to get started: checkout upsells > checkout extensions
Customizing the button color if you are using checkout extensions
How to add a quantity selector (Line Item Actions) to the checkout
How to migrate upsells from checkout.liquid to Checkout Extensions?
How to make a variant selection required on checkout upsells
How to enable checkout upsells using the Checkout Editor
Gift with Purchase
How can I let a shopper upgrade from a cart product to an upsell product that's shown?
How to find out which Shopify checkout you're using
How to find out which checkout you have?
'How to use the 'Buy Now' button with checkout upsells'
How to add UpsellPlus to your Shop Pay checkout
I have a headless store, will checkout upsells work?
How to A/B test checkout upsells
How to get started: checkout upsells
How to show an upsell based on a certain cart value or other conditions