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Klarna support information
Additional Klarna plugins
Sign in with Klarna
Introduction
Sign in with Klarna (SIWK) is an addition to the Klarna Payments (KP) plugin. It will add a button on the cart page and My account (before you sign in) that will log in the customers, with all their preferences already set.
When the customer data is received from Klarna, a check is made to see if this customer exists in WordPress/WooCommerce with the same email. A new customer is created if none are found. After this the customer is logged in on their existing, or new, account.
Please note that Sign in with Klarna is an option you can enable or disable with Klarna Payments. This option is not available with Klarna Checkout.
Known compatibility issues
SIWK is currently not compatible with the WooCommerce Checkout block. Instead the classic shortcode must be used in order for SIWK to work as expected.
Related documentation
- Klarna Docs – Sign in with Klarna
Read Klarna’s own Sign in with Klarna documentation.
Klarna Merchant Portal
To configure Sign in with Klarna you first need to log in to your Klarna Merchant Portal to retrieve the Client identification needed for activation.
- Log in to your Klarna Merchant Portal.
- Navigate to Conversion boosters → Sign in with Klarna.
- Select your store and click Get started or Manage and follow the steps.
- Move on to Activation
You can also access and copy your Client identifier, or generate one, if you navigate to Conversion boosters → Payment settings → Client identifier
Under the Allowed origins tab, you also register the domain(s) you are expecting to use the Web SDK on.
Activation
Go to: WooCommerce → Settings → Payments → Klarna for WooCommerce.
Client ID – For Sign in with Klarna to work you need to enter the Client ID in the Credentials section for Klarna for WooCommerce. This is retrieved under the Conversion booster tab in your merchant portal.
Copy the Client identifier for your store and paste it in the Client ID field for the country (or region) you wish to activate under the Credentials section.
Please note that Client ID retrieved while the store being in Test mode will not work in Production mode, and vice versa.
Client ID retreived from Conversion boosters → Sign in with Klarna:
Client ID retreived from Conversion boosters → Payment settings:
Configuration
On the Klarna for WooCommerce Settings page, scroll down to the section for Sign in with Klarna to enable and configure placements and style.
- Enable/Disable – Check the Enable Sign in with Klarna box to activate.
- Redirect URL – Copy this URL and add it to your list of allowed redirect URLs in the Sign in with Klarna settings on the Klarna merchant portal.
- Button theme – Set the button’s color theme. Choose between Dark, Light and Outlined.
- Button shape – Set the shape of the Sign in with Klarna button. Chose between Rounded, Rectangular and Pill.
- Badge alignment – Change alignment of the Klarna logo on the call to action button. Choose between Badge, Left and Centered.
- Cart page placement – Select where you want the Sign in with Klarna button to appear on the Cart page. Choose between Before “Proceed to checkout” button and After “Proceed to checkout” button.
- Required Customer Data – These scopes are included by default, as necessary for creating a WooCommerce customer account in your shop. More about available scopes with Sign in with Klarna here. Additional scopes can be customized if applicable, more info here.
- Request Additional Customer Data – Check the box(es) of the additional customer data you wish to include.
