Klarna Docs

Integrate On-site messaging

Learn how you can add On-site messaging. Get a glimpse of what each integration option offers and start implementing.

How to create a user account after purchase.

On-site messaging for mobile

Native support for this feature is as easy as it gets by an actual native view supporting both iOS and Android.

Mobile

Customize placements with CSS

This guide provides instructions on how to style the On-site messaging placements that appear on your pages through CSS to align them with the look and feel of your page.

How to enable Sign in with Klarna in WooCommerce

This guide explains how to add Sign in with Klarna to your WooCommerce store.

WooCommerce

Express button mobile integration

You can integrate Express button into your mobile app.

Deprecated

Before you start with On-site Messaging

Ready to make the most of On-site messaging? Here's what you need to know before integrating this solution into your store's website or mobile app.

On-site messaging JavaScript library

In this step-by-step guide you will learn how to integrate Sign in with Klarna into your Android app.

The JavaScript library delivers the core functionality of On-site messaging.

Before you start with Express Checkout

JavaScript SDK events

Learn about the events exposed by On-site messaging.

Ready to offer Klarna Express Checkout to your customers? Here's what you need to know before integrating the product with your store's website.

Subscriptions and on-demand

How to combine login and tokenized payments

How to install Express Checkout in WooCommerce

This guide explains how to add Express Checkout to your WooCommerce store.

WooCommerce

How to enable Sign in with Klarna in PrestaShop

This guide explains how to add Sign in with Klarna to your PrestaShop store.

Prestashop

Vintage Ad placements

How to add On-Site Messaging on your vintage theme on Shopify.

Shopify