Klarna On‑Site Messaging

Klarna On‑Site Messaging

by Klarna

Join the 6,000+ merchants already promoting pay later options

1.8 of 5 stars(48 reviews)

Show users they can pay later

Promoting the availability of payment plans on product and checkout pages increases your sales

Personalize your messaging

The messaging can be personalized, creating a more intimate and unique online shopping experience, and more conversions for you

Dedicated support team

A dedicated support team are standing by to assist with any app-related queries you might have, contact them at skosm@klarna.com

About Klarna On‑Site Messaging

Sell more with personalized payment offers

Klarna has been taking the friction out of payments since 2005 for over 85 million consumers globally, allowing shoppers to pay later in interest-free installments as an easy, flexible alternative to credit. Over 6,000 Shopify merchants are already using the On-Site Messaging App to continue that smooth journey, increasing risk-free sales through tailored messaging and showing your customers available payment plans while they’re still shopping.

On-Site Messaging is easy and simple to integrate. 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. Advertising the ability to buy now and pay later before checkout improves sales

Let your customers know instantly how they can pay before they buy

Consumers are not always aware of the different payment plans available to them before reaching checkout. Knowing they can shop now and pay later, or split into installment payments prior to checkout, influences the purchase decision and is a way to affirm their spending power. Not just to buy, but also how much to spend.

While customers can pay over time Klarna pays you upfront. Your business is fully protected from fraud and credit risk, and shoppers are safe too.

Capitalize on payment preferences

Payment preference is highly personal. Payment preference and communication influences the likelihood of a customer completing a purchase. The On-Site Messaging app tailors messages to previous Klarna users based on their specific preferences and the products they are looking at, while new users are informed about what payment options are available to buy the goods in which they’re interested.

Any questions? Visit our FAQ page, watch the installation video, or email the team directly: skosm@klarna.com. Our dedicated Support Team are standing by, and will respond to your queries within 2 working days.

Sound good? Just make sure you're already up and running with Klarna Payments first.

To get Klarna active on your store, follow these 3 steps:

  1. Sign up for Klarna API credentials at eu.portal.klarna.com/signup

  2. Complete the Shopify Klarna Payments Installation Wizard Provided when you sign up for Klarna API credentials.

  3. Enter your Klarna API credentials in your Shopify admin under Alternative Payment Methods & you're finished! (Please make sure the Installation Wizard was successful prior to activating the Klarna payment method in your store).

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

See the app in action

Explore how the app works in an example store.

View example store

Media gallery




1.8 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
  • 5 of 5 stars
    17% of ratings are 5 stars
  • 4 of 5 stars
    6% of ratings are 4 stars
  • 3 of 5 stars
    6% of ratings are 3 stars
  • 2 of 5 stars
    8% of ratings are 2 stars
  • 1 of 5 stars
    63% of ratings are 1 stars

Most recent reviews

Kreative Living

This app is basically trash, do not waste your time installing it. Don't bother contacting klarna becuase they don't respond and basically just ignore you. I reached out multiple time and have only gotten one response but no help after a month of having this app. The reviews don't lie.

I currently have afterpay in my store as well and they have been very good at responding and helping with any questions I have, I highly recommend you try them first or any other platform before you waste your time with klarna. When a business doesn't provide you customer service, you should really just stay away from it.

Developer reply

August 7, 2020

Kreative Living,
We're sorry to hear you haven't received the necessary assistance from us. We are currently experiencing increased support volumes. Our Merchant Support is looking at your case and will get back to you as soon as possible.


I really hate leaving bad reviews because people work hard on their product, but after spending almost 3 hours trying to set this up a few weeks ago, and had it “on my store” thinking it was setup and ready to go, I find that there is no Klarna button on my site anywhere so the setup was not successful. I don’t understand I thought I done everything, completed all the steps...

The setup is extremely tedious and confusing, I won’t be trying again. I will have to look for another provider with a more simple setup, it really shouldn’t have been this hard.


Developer reply

August 4, 2020

We're very sorry to hear that you've had trouble getting started with the On-Site Messaging app. We are doing our best to simplify the setup of the App.

If you wish to get help on the installation, we strongly advise to speak to our dedicated support team by emailing skosm@klarna.com and they'll be able to guide you through the process.

Gladiator Fitness

Going to have to join the queue of concerned users here, this app is terrible, the support team don't even check what they are sending out. By far this has been the worst experience of any Buy Now, Pay Later offering. The 6,000+ merchants must have fluked it

Developer reply

August 4, 2020

Gladiator Fitness,
We're very sorry to hear you haven't received the necessary guidance from our end. We have the regional support looking into your integration with Klarna and we will get in touch with you soon.