Klarna On‑Site Messaging

Sell more with personalized payment offers

Klarna takes the friction out of payments for consumers globally, allowing shoppers to pay later in interest-free payments as an easy, flexible alternative to credit. Show your customers payment plans are available while they’re still shopping, which leads to more conversions at checkout for you.

On-site messaging is simple to integrate, and highlighting buy now pay later (BNPL) options before checkout can increase sales. The app provides customized messaging, ranging from banners promoting your partnership with Klarna and availability of payment options, to personalized promotions on product or cart pages.

Want to add On-site messaging? First, our 3 simple steps below get you started with Klarna Payments and then you can install the On-site messaging app.

STEP 1 | Sign up with Klarna

To get started, you’ll need to create a merchant account and sign up on Klarna's website.

STEP 2 | Get & save your Klarna API credentials

Generate new API credentials by going to Settings in the Merchant portal. Download and open the file; you'll need these API credentials in the next section.

STEP 3 | Install Klarna in your Shopify store

Go to the Klarna docs website to find the setup wizard URL to guide you through the Klarna alternative payments integration for Shopify. Once integrated with Klarna, you can then easily use the On-site messaging app.

Place a trial purchase to ensure everything is working correctly. Then head to the Klarna merchant portal to cancel (make sure you don’t pay yourself)!

Learn more about Klarna.

Click the Developer Website link to the right if you are interested in finding out more about Klarna and our payment methods, have questions, or have not yet signed up to offer Klarna.