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Klarna in Homepage Source

Klarna offers buy-now-pay-later and installment checkout options, common on retail sites.

The source-code fingerprint

Klarna's Web SDK and On-Site Messaging load from js.klarna.com, so the hostname appears on storefronts offering Klarna at checkout or promoting installments.

Likely false positives: Redirect-based Klarna checkouts never touch the storefront's HTML, so this undercounts total Klarna merchants.

Stored source examples for Klarna

These examples matched js.klarna.com in stored homepage source when the query was sampled on 2026-10-14. The sites may have changed since the source was captured. A match establishes a source reference; it does not confirm an active installation or code execution.

• www.belkin.com ... async\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="79292d8a-d8d7-5aa...
• www.toms.com ...t>\n\n\n\n\n\n <script nonce="${nonce}" async defer src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="1ada9f60-e3a4-58d9-b8...
• www.decathlon.fr ...klarnaPdpConfiguration":{"locale":"fr-FR","sdkUrl":"https://js.klarna.com/web-sdk/v1/klarna.js","clientID":"6e871c94-e7f8-58f9-b9a8-6...
• www.casetify.com ...mous">\n\n \n <script async src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="3dbc2622-5858-514e-bc...
• www.torrid.com ...ript>\n</div>\n\n</div>\n\n\n\r\n\r\n\r\n <script async src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="klarna_live_client_SG...
• www.decathlon.co.uk ....com maps.gstatic.com *.google-analytics.com www.google.com js.klarna.com na.klarnaevt.com eu.klarnaevt.com a.getflowbox.com gateway....
• www.musiciansfriend.com ...ript\n async\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="klarna_live_client_...
• glowforge.com ...nvironment="production" type="text/javascript" src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="klarna_live_client_ai...
• www.columbia.com ...mplience.net joinhoney.com jquery.com js-agent.newrelic.com js.klarna.com *.klarnacdn.net *.klarnaservices.com *.krxd.net krxd.net lo...
• www.shelly.com ...ring */ }\n })();\n</script>\n\n <script async src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="9c8a7017-ad57-55df-83...
• www.cotopaxi.com ...script" async="" data-environment="production" src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="a067382a-8625-57a0-b4...
• skims.com ...ient-id="12b15b31-a6a3-5e79-9537-af7bf710bc89" src="https://js.klarna.com/web-sdk/v1/klarna.js" nonce="15123bcb8870642fbf78811ec6c87a...
• www.westcoastseeds.com ... <!-- KLARNA SCRIPT -->\n <script\n async\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="dc055993-c347-584f-...
• www.springerpub.com ...>const { KlarnaSDK } = await import("https\u003A\u002F\u002Fjs.klarna.com\u002Fweb\u002Dsdk\u002Fv1\u002Fklarna.mjs");\nconst MyKlarna...
• well.ca ...sync\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="klarna_live_cli...
• www.oreillyauto.com ...nding on environment -->\n<script defer="defer" src="https://js.klarna.com/web-sdk/v1/klarna.js" data-environment="production" data-cl...
• www.pluginboutique.com ...rustBox script -->\n <script\n defer\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="f63287b6-d6d4-510...
• www.unieuro.it ....com/\n https://www.paypal.com/sdk/js\n https://js.klarna.com/web-sdk/v1/\n https://js.playground.klarna.com/\n ...
• www.presonus.com ...\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="klarna_live_c...
• www.taniaksiazka.pl ...ta/library/main.js x.klarnacdn.net/apf/beta/library/main.js js.klarna.com ssl.ceneo.pl *.opineo.pl www.google.com/recaptcha/api.js ap...
• testthewebforward.org ...offerings","listing_id":1790774795,"klarna_osm_js":"https://js.klarna.com/web-sdk/v1/klarna.js","is_eligible_for_klarna_osm":false,"i...
• www.shopto.net ...\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="be216ac1-cf65...
• www.euronics.it ... async\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="klarna_live_clien...
• store.gazzetta.it ...>const { KlarnaSDK } = await import("https\u003A\u002F\u002Fjs.klarna.com\u002Fweb\u002Dsdk\u002Fv2\u002Fklarna.mjs");\nconst MyKlarna...
• gear.bethesda.net ...Script -->\n <script\n async\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-client-id="d7579d56-9fc5...
• www.express.com ... <script\n data-environment="production"\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n async\n data-client-id="3a543f4...
• www.bergdorfgoodman.com ...:"/search/dt/api/grs-auto-suggest","KLARNA_SOURCE":"https://js.klarna.com/web-sdk/v1/klarna.js","API_STYLYZE_STYLEBOARDS":"https://be...
• www.mandco.com ...\n \r\n <script async\r\n src="https://js.klarna.com/web-sdk/v1/klarna.js"\r\n data-client-id="865707fe...
• www.westwing.de ...<script async="" data-environment="production" src="https://js.klarna.com/web-sdk/v1/klarna.js" data-client-id="klarna_live_client_Qz...
• www.thetoyshop.com ...PAGE'\n });\n </script>\n\n <script \n src="https://js.klarna.com/web-sdk/v1/klarna.js"\n data-c...

Showing 30 checked source examples. The headline is estimated matches. Open the full ranked list, inspect the matched source, and export the domain list →

Related technologies

How this works

The headline distinguishes candidate upper bounds (index prefilter), estimated matches (a projection from checked samples) and verified matches (an exact count established by the engine). The index contains 131,219,565 homepage documents, one homepage per hostname, including subdomains. The source index was promoted 2026-09-22 and follows a quarterly rebuild schedule. The sample date is when this query was checked against the stored index, not a new crawl of each example site.

Comparing adoption across tools? The Web Technology Adoption Report ranks the most common tags in the index side by side.