Prefill checkout properties

You can prefill properties on a checkout for a smoother checkout experience for customers. You might do this when:

• You capture some information about a prospect on the page before they interact with your checkout.
• You've built an integration with a CRM solution that passes email or other information as parameters on signup links.
• You're working with a logged-in customer, presenting them with upgrade options.

How it works

Paddle Checkout is optimized for conversion, asking customers for:

• Email address
• Country
• ZIP/postal code, or region (only in some markets)
• Payment details

Customers can also add a discount and information about their business, like a VAT or tax number.

You can pass data to a checkout to prefill properties, reducing purchase friction for customers and increasing conversion. You can prefill all customer details. You can't prefill payment details, but you can present saved payment methods for returning customers.

To prefill address or business details, you must also pass a customer email or customer ID. You can't prefill only a country or address.

Prefilling works with both overlay checkout and inline checkout. You can use HTML data attributes or JavaScript properties.

Before you begin

You'll need to include Paddle.js on your page and pass a client-side token.

To open a checkout, you'll need to create products and prices and pass them to a checkout.

Pass customer or business information

In this example, there's a signup button that includes an email address field. The page has a country selector.

You could use HTML attributes or JavaScript properties to prefill this information in checkout:

var itemsList = [
  {
    priceId: 'pri_01gm81eqze2vmmvhpjg13bfeqg',
    quantity: 1
  },
  {
    priceId: 'pri_01gm82kny0ad1tk358gxmsq87m',
    quantity: 1
  }
];

Paddle.Checkout.open({
  items: itemsList,
  customer: {
    email: "jo@example.com",
    address: {
      countryCode: "US",
      postalCode: "10021",
      region: "New York",
      city: "New York",
      firstLine: "4050 Jefferson Plaza, 41st Floor"
    },
    business: {
      name: "ChatApp Inc.",
      taxIdentifier: "555952383"
    }
  }
});

<a
  href='#'
  class='paddle_button'
  data-theme='light'
  data-customer-address-country-code='US'
  data-customer-email='jo@example.com'
  data-items='[
    {
      "priceId": "pri_01gs59hve0hrz6nyybj56z04eq",
      "quantity": 1
    },
    {
      "priceId": "pri_01gs59p7rcxmzab2dm3gfqq00a",
      "quantity": 1
    }
  ]'
>
  Buy Now
</a>

Pass customer, address, and business IDs

Instead of passing customer email, address, and business information, you can pass an existing customer ID, address ID, or business ID.

You might do this if you're working with a logged-in customer who's looking to upgrade or purchase another subscription, or if you have a CRM integration that creates entities in Paddle for prospects.

var itemsList = [
  {
    priceId: 'pri_01gm81eqze2vmmvhpjg13bfeqg',
    quantity: 1
  },
  {
    priceId: 'pri_01gm82kny0ad1tk358gxmsq87m',
    quantity: 1
  }
];

Paddle.Checkout.open({
  settings: {
    displayMode: "overlay",
    theme: "light",
    locale: "en",
    allowLogout: false
  },
  items: itemsList,
  customer: {
    id: "ctm_01gm82kny0ad1tk358gxmsq87m",
    address: {
      id: "add_01gm82v81g69n9hdb0v9sw6j40"
    },
    business: {
      id: "biz_01gnymqsj1etmestb4yhemdavm"
    }
  }
});

<a
  href='#'
  class='paddle_button'
  data-theme='light'
  data-customer-id='ctm_01gm82kny0ad1tk358gxmsq87m'
  data-customer-address-id='add_01gm82v81g69n9hdb0v9sw6j40'
  data-business-id='biz_01gnymqsj1etmestb4yhemdavm'
  data-items='[
    {
      "priceId": "pri_01gm81eqze2vmmvhpjg13bfeqg",
      "quantity": 1
    },
    {
      "priceId": "pri_01gm82kny0ad1tk358gxmsq87m",
      "quantity": 1
    }
  ]'
>
  Buy Now
</a>

Apply a discount

You can pass the Paddle ID of a discount entity or its discount code to a checkout to automatically apply it — no need for customers to enter a code.

Paddle.Checkout.open({
  settings: {
    theme: "light",
    locale: "en"
  },
  discountId: "dsc_01gp0ynsntfpyw2spd2md1wqx1",
  items: [
    {
      priceId: 'pri_01gm81eqze2vmmvhpjg13bfeqg',
      quantity: 1
    },
    {
      priceId: 'pri_01gm82kny0ad1tk358gxmsq87m',
      quantity: 1
    },
    {
      priceId: 'pri_01gm82v81g69n9hdb0v9sw6j40',
      quantity: 1
    }
  ]
});

<a href='#'
 class='paddle_button'
 data-display-mode='overlay'
 data-theme='light'
 data-locale='en'
 data-items='[
      {
          "priceId": "pri_01gm81eqze2vmmvhpjg13bfeqg",
          "quantity": 1
      },
      {
          "priceId": "pri_01gm82kny0ad1tk358gxmsq87m",
          "quantity": 1
      },
      {
          "priceId": "pri_01gm82v81g69n9hdb0v9sw6j40",
          "quantity": 1
      }
  ]'
  data-discount-id='dsc_01gp0ynsntfpyw2spd2md1wqx1'
>
 Buy now
</a>

Build a one-page checkout

One-page checkout experience

Pass variant with the value one-page as a checkout setting to present customers with a one-page checkout experience. Paddle Checkout collects customer information and payment details on the same page.

var itemsList = [
  {
    priceId: 'pri_01gm81eqze2vmmvhpjg13bfeqg',
    quantity: 1
  },
  {
    priceId: 'pri_01gm82kny0ad1tk358gxmsq87m',
    quantity: 1
  }
];

Paddle.Checkout.open({
  settings: {
    displayMode: "overlay",
    variant: "one-page"
  },
  items: itemsList,
});

Multi-page checkout

If you prefer the multi-page checkout experience, Paddle skips the first page of checkout when all required fields are prefilled. This means customers land on a screen where all they need to do is enter their payment details.

To jump to the second page on the multi-page inline checkout, prefill the customer's email and address details, or pass Paddle IDs for an existing customer and address: