JavaScript Library References

Klarna Payments

Finance purchases in your own checkout, in your online store via Klarna.

Are you looking for how to call our backend services ? Visit our API Reference to read documentation on our APIs and also be able to download their specification files (OASv2 / Swagger) to work with.

Instant Shopping

We offer a JavaScript library to display and configure the Instant Shopping Button .

For a complete reference, please refer to the JavaScript reference page. (opens up in a new tab/window)

On-Site Messaging

The On-Site JavaScript library delivers the core functionality of the On-Site Messaging Platform.