Klarna Docs
API and SDKsSupport
Guide
Finalize an authorization
Use the Klarna JavaScript SDK to finalize an authorization.
Payments
Live
Guide
Payments with Mollie
Mollie is a payment service provider offering payment solutions for businesses of all sizes to sell and grow effectively.
Mollie
Payments
Guide
Install the Klarna extension in Adobe Commerce
Learn how to install the Klarna extension from the Adobe Commerce Marketplace.
Adobe Commerce
Payments
Guide
Go-live checklist
Before you go live, follow this checklist to make sure you're ready to start accepting Klarna payments.
Testing tools
Payments
Guide
Klarna WebView
This guide will walk you through the steps required to add the Klarna WebView to your React Native app and how to use it.
Payments
Mobile
SDK
Guide
Prepare your integration web
Ready to offer a smoooth purchase experience to your customers? Here's what you need to know before integrating Klarna payments into your store's website or mobile app.
Payments
Live
Guide
Best practices for Kustom Checkout
Follow our best practices to make your integration robust, fast and secure.
Payments
Guide
Authorization callback
To ensure optimization of the conversion rates, you should get an authorization token through a server-side callback.
Payments
Live
Guide
Klarna Debit Risk payments
Read this article for an introduction to Klarna Debit Risk and how you can integrate it.
Payments
Post-purchase
Guide
Standalone in-store solution
Start accepting Klarna payments in-store without the need for extra hardware.
Live
Payments
Guide
Best practices for partners
Follow our best practices to get the most out of your In-store integration.
Payments
Live
Guide
Extra merchant data payment
Learn about all the additional information about your customer you can send.
Payments
Live
Guide
Payment Descriptors
Find the latest Klarna payment descriptors per region and translations.
Payments
Guide
Known constraints for Klarna Payments in Shopify
Read about some limitations that can affect your Klarna with Shopify integration.
Shopify
Payments
Guide
Update the cart
If your customer updates their shopping cart or if you make any changes to payment details, you have to update the payment session before creating an order.
Payments
Live