API and SDKsSupport
Guide
Web SDK integration for Sign in with Klarna
Integrate Sign in with Klarna to offer a fast, simple and smoooth login to your customers.
Conversion boosters
SDK
Guide
Klarna deals promotions
Incentivize Klarna shoppers and boost conversion with an auto-applied deal on your site that is seamless to use.
Payments
Live
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Media & Marketing
Guide
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.
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Mobile
Guide
How to enable Sign in with Klarna in WooCommerce
This guide explains how to add Sign in with Klarna to your WooCommerce store.
WooCommerce
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Guide
How to install On-site messaging on WooCommerce
This article provides guidelines on installing and configuring On-site messaging in your WooCommerce store.
WooCommerce
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Guide
How to enable Sign in with Klarna in PrestaShop
This guide explains how to add Sign in with Klarna to your PrestaShop store.
Conversion boosters
Prestashop
Guide
Vintage Ad placements
How to add On-Site Messaging on your vintage theme on Shopify.
Shopify
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Guide
Express button mobile integration
You can integrate Express button into your mobile app.
Deprecated
Conversion boosters
Guide
Sign in with Klarna x Tokenized Payments
In this guide you will learn how to integrate Tokenized Payments in Sign in with Klarna into your Android app.
Mobile
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Android
Guide
On-site messaging API integration
This document describes the integration steps needed to make use of the Klarna On-site messaging API.
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Guide
Other operations
Implement proper token exchange, refresh, and validation using JWKS to support seamless and authenticated integrations.
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Guide
JavaScript SDK events
Learn about the events exposed by On-site messaging.
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Live
SDK
Guide
How to install Express Checkout in WooCommerce
This guide explains how to add Express Checkout to your WooCommerce store.
WooCommerce
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