StackPulse detects Klarna on 377 websites — 0.33% of the 115,150 domains in the index — making it the #1 buy now pay later technology we track. Updated October 27, 2026.
StackPulse currently detects Klarna on 377 websites, which is 0.33% of the 115,150 domains in the index. The count is refreshed as the crawler re-scans the web.
How do I check whether a website uses Klarna?
Open the free StackPulse lookup, enter the domain and the buy now pay later section will list Klarna if its scripts, headers or markup are present. Developers can call GET /v1/lookup/:domain.
Can I download a list of websites that use Klarna?
Yes. Lead Export filters the index by Klarna (optionally combined with other technologies) and streams the matching domains as CSV, up to 50,000 rows per file.
What is Klarna?
Klarna is a buy now pay later technology. It ranks #1 of 4 buy now pay later technologies by number of websites in the StackPulse index.
Look up any domain by API
One call returns the ecommerce platform, payment gateways, marketing pixels and infrastructure. Results are cached for a week.