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What is On-site messaging (OSM) and how do I activate it?

On-site messaging (OSM) is a tool used to let customers know that Klarna is available on your website. Here are some examples of what they might look like:


The service is available for all retailers using Klarna Payments or Klarna Checkout. And it’s free! Letting your shoppers know about the different payment options available to them before they reach the checkout can influence the purchase decision.

All retailers using Klarna Payments or Klarna Checkout are able to use our manual HTML integration. Everything you’ll need can be found in the On-site Messaging section of the Klarna Merchant Portal. Instructions on how to integrate using HTML can be found here on our Docs website

Some platforms have apps or plugins that make this process even easier! Click on your platform below for more information:

Still need help? Please contact our Merchant Support team.

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Monthly financing through Klarna and One-time card bi-weekly payments with a service fee to shop anywhere in the Klarna App issued by WebBank. Other CA resident loans at select merchants made or arranged pursuant to a California Financing Law license. Copyright © 2005-2023 Klarna Inc. NMLS #1353190, 800 N. High Street Columbus, OH 43215.