Pre-filled checkout fields
When you share a product in Lemon Squeezy, a link is generated for you that you can share in emails, newsletters, social media, etc. or you can use the Checkout Overlay to embed the link on your website using HTML. In both cases, the link can be customized by adding extra parameters to the query string to prefill the fields in the checkout when it loads.
The basic structure of a checkout link is as follows:
For example, it might look like https://my-store.lemonsqueezy.com/checkout/buy/d1f120fd-5adc-4fff-8915-cce713d29427
Pre-filling customer data in checkout links
If you already know some of your customer data before sending them to the checkout, you can add a few extra parameters to prefill customer data to make the checkout process more straightforward.
Note that the checkout[billing_address][country] should be in a ISO 3166-1 alpha-2 format. Note that all data will be sanitized and validated before the checkout is submitted.
The list of available parameters are:
| Parameter | Description | Example Value |
|---|---|---|
| checkout[email] | Customer's email | [email protected] |
| checkout[name] | Customer's full name | Luke Skywalker |
| checkout[billing_address][country] | Billing address country | US |
| checkout[billing_address][state] | Billing address state | NY |
| checkout[billing_address][zip] | Billing address ZIP/postal code | 10038 |
| checkout[tax_number] | Business tax number | GB123456789 |
| checkout[discount_code] | Discount code | 10PERCENTOFF |
Pre-filling customer with the API
You can also pass custom data to checkout links created with the API by passing a JSON object inside checkout_data. Read the API docs for more details.