Klarna On‑Site Messaging

Convert more sales with flexible payment option messaging.

by Klarna · Launched: June 2019 · Free plan available.

2.6 (100) on Shopify Used by 273,577 Shopify stores

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Convert more sales with flexible and customized On-site Messaging about Klarna as a payment method.

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About Klarna On‑Site Messaging

This app is for merchants with an active Klarna Payments integration. Note: this app will not add Klarna as a payment method. Use this app to boost your business with messaging that lets your shoppers know that Klarna is an available payment option throughout the entire shopping journey.

Last verified: October 12, 2026 · Fresh

App details

Developer: Klarna
Category: Store design
Pricing: Free plan available
Launched: June 2019
Rating: 2.6 (100) on Shopify

Key features

Convert more sales with flexible and customized On-site Messaging about Klarna as a payment method

Integrations with:

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1 plan · starts free

Free

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 102 Shopify App Store reviews

Use the arrows to read individual reviews

Great way to advertise Klarna monthly payment plan on product page. Works nicely and automatically with Shopify Payments Klarna payment method. Took one star off as it lacks the ability to change if the text for the placement "credit-promotion-auto-size" is left, center or right. By default it is at center but for our store text to the left would've resulted in cleaner look.

— Atom Airsoft

Amazing. When we first installed - it didn't work, but after the help of Nicole on the support team, it was instantly installed and functioning correctly. Thank you.

— Canine Culture

UPDATE: 10 days later I had a reply back although the person didn't know what the problem was. After highlighting that to them, someone else replied which didn't appear to know either but at least quoted Sara Nyrönen (Delivery Manager) in. Sara eventually replied and was very helpful. Essentially, we created a Klarna account ourselves before Shopify coming up with its own integration. Due to the i...

— The Foalyard

UPDATE: after reaching out, Klarna support has solved the issues in a proficient manner, special thanks to Teodora and Nicole for the help!

— SORELLY

It works only with last updated theme. easy to install

— AncientSmithy

I was unable to get the app installed on my store at first. My brain was so fogged up. I took a break for a few days and went back to try and integrate Klarna to my website and it was really easy. I guess it just took me to slow down and read everything thoroughly. I went back to my site to check and make sure it was done successful and now I'm happy and can share the news with my customers. For...

— A Precious Flame

Super easy to se up in 2 minutes. Would recommend to anybody. No idea why there are 1 star reviews.

— Teng Tools USA

Useful application, easy to use. Would like to see further improvements; especially for accessing a list of On-Site Messaging badges with html availability so we can add them to pages using code instead.

— WONDERCRAFT LTD

Doesn't work anymore,everytime open it just say"An error has occurred". No app block and be added in editor and even use the code snippets" " ,just flash the blurry klarna icon then gone? Update: A few weeks ago, they contacted us to manually install the code properly using the collaboration account. One star was taken away because of the late reply.

— Uditerboard

Bona aplicació. Instal·lació amb tutorial molt util par i amb suport del departament tècnic. Banner fàcil d'instal·lar i elegant disseny.

— juegoyjardin.com

I was setting up the hard way through code and after a lot of tears, I then installed this app.... Thankyou!

— Mindless Shoppers

Funktioniert auch bei Deutschen Shops!! Alles ging schnell und Super, keine Probleme oder sonstiges. Positiv überrascht! Viele verschiede Layouts, für jeden Shop was da. Conversion Rate und generelles Vertrauen im Shop erheblich gestiegen. Würde ich jedem Shop-Inhaber auf jeden Fall empfehlen. Ein Muss!!

— Internationale Videos

As a PM in my past life, I have a theory that this app was intentionally designed to fail. It doesn't make sense.

— Melas Beauty

I don't leave negative reviews often, but after this experience I think other Shopify merchants deserve the warning. I've spent weeks trying to get Klarna connected to my store. Shopify support confirmed my Merchant ID is valid and active on their end, so the problem sits with Klarna's own integration. The app fails to connect with an error every time. Every time I've contacted Klarna support, t...

— SantHome

I used Klarna via Shopify Payments and lost both the goods and the money after a chargeback, despite confirmed delivery and full evidence provided (tracking number and customer correspondence). The customer kept the product and received a refund, while I was charged additional fees. Klarna offers no real protection for merchants, no transparent appeal process and no accountability. Support only re...

— Pernille

empty

— Rinascimento home

son unos impresentables, llevo mas de un mes diciendo que necesito cambiar la cuenta y no hay forma envie 400 correos , 3000 llamadas y no son capaces de cambiar la cuenta ni de bloquear los pagos. Me deben mas de 4 pagos ya que les llevo avisando mas de un mes.

I am unable to customize the colors of “Credit Promotion Auto Size,” even after writing to Klarna's support team and Shopify contacting them on my behalf as requested by Klarna. Furthermore, I must mention that the “customize” button does not function.

— Le Bucket

Errors upon installing the app and connecting it to MID. Unusable at the present. I've uninstalled, re-installed and attempted to re-integrate it many times.

— FrigginJewelry.com