Do more when you sign in with Klarna
Let 87 million customers log in to your store faster with Klarna. Discover safe sign-ups, single-click payments, and personalized shopping preferences on one screen.
Onboard faster
Signing in with Klarna saves customers’ time and puts them in full control.
9x times faster than regular onboarding
Set payments automatically during sign-up
Save shopping preferences and enhance customization
How it works
Whether they’re ready to check out or just browsing, let customers sign up to your store with their Klarna account in three simple steps.
Choose Klarna to sign in
Give customers the option to sign in with Klarna, and skip long sign-up forms.
Collect consent
Customers can review and consent to the information your store is requesting, keeping them in control.
Smoother shopping and checkout
Once logged in, your platform becomes personalized to their shopping taste, with prefilled details at checkout.
Boost your business with one-click sign-up
Improve your customers’ experience end-to-end, and see the results in your metrics.
Boost purchase frequency
Pre-saved shopper and payment data is automatically populated, minimizing drop-off and resulting in more sales.
Grow your customer base
Half of sign in with Klarna users are new to your brand. Allow those with existing Klarna accounts to breeze through registration.
Understand customer preferences
Improve return rates by offering personalized suggestions that are truly relevant to your customers.
Increase customer satisfaction
Our user-friendly sign-in process and effective personalization will keep your customers coming back.
Enable personalized shopping experiences
Sign in with Klarna transforms a simple sign-in process into personalized experiences for both new and returning shoppers, boosting engagement and business value.
Offer more from the start
Allow customers to set up payments during sign-up.
Klarna Wallet set-up with a tap
Create a token for future purchases and renewals
Easy payments management in the Klarna app
Trusted by the world's biggest brands
Join Klarna partners across the globe in offering a smooth sign-in experience that impacts the bottom line.
Tradera x Klarna
"We immediately get a complete profile with just a couple of clicks from the consumer.”
- Stefan Öberg, CEO at Tradera.
Free for all partners
Getting started is easy and free. After activating your integration, you’ll be able to add Sign in with Klarna to your site right away.
Questions?
Want more info on Sign in with Klarna or how to get started? Find your answers below. For further help or troubleshooting, please contact Merchant support.
Sign in with Klarna goes beyond helping customers create an account quickly—it also enhances their entire shopping experience. By prefilling checkout details like date of birth, shipping address, and payment information, it simplifies the buying process. Plus, it can set up tokenized payments during sign-up, ensuring future transactions are faster and more secure. Most importantly, Sign in with Klarna shares customers’ shopping preferences with merchants, enabling personalized experiences.
Sign in with Klarna speeds up checkout by pre-filling customer information, reducing any friction in the process. This makes it easier and faster to complete purchases, which can lead to higher conversion rate.
You can place the Sign in with Klarna button in several key locations on your site for maximum visibility and convenience. Popular spots include the header on every page for easy access, the login or account creation page, and at checkout to speed up the process for returning customers.
Sign in with Klarna is available in all the markets where Klarna Payments is offered.
Yes, you can customize Sign in with Klarna to fit your store’s look and design. Klarna offers options to adjust the button’s appearance and, in some cases, the text to ensure it aligns with your branding. For more details on how to customize the button, check out
.Sign in with Klarna is available for direct integration through our Web and Mobile SDKs, or via direct OAuth integration. You can also integrate it through Customer Identity and Access Management (CIAM) providers such as Auth0 and Microsoft Azure AD. Additionally, it’s available on multiple eCommerce platforms like Adobe Commerce, Salesforce Commerce Cloud, and others, making integration flexible and accessible. You can easily onboard to Sign in with Klarna and generate credentials through the Merchant Portal. The onboarding process is easy and it only takes two steps to generate your credentials. Simply specify which data you want to retrieve from customer accounts, provide your Terms & Conditions and Privacy Policy, upload your logo, and you’re good to go.
Yes, you can integrate Sign in with Klarna even if you're using a Payment Service Provider (PSP) like Stripe or Adyen. It's fully available for all merchants, whether you have a direct integration with Klarna Payments or are leveraging a PSP.
Sign in with Klarna is currently free of charge. However, this may change in the future as we continue to develop new value-added features, especially around AI-based personalization. To get started, you must have a Merchant ID (MID).
Boost registrations through one-click sign-up
Eliminate steps from your onboarding to speed up the checkout process. Sign in with Klarna is available for all integration types in all markets.