One script tag. Seven EU countries.
Warning risk minimised.
WiderrufButton delivers the legally locked wording pair — step 1 “Withdraw from contract”, step 2 “Confirm withdrawal” — from a server-side legal catalogue. Every incoming withdrawal gets a SHA-256 fingerprint and lands in the daily Merkle root. Usable as durable-medium evidence. Mandatory from 19 June 2026.
How the two-step process works
Button click
The consumer clicks “Withdraw from contract”. The withdrawal form opens.
Confirmation
Enter name and contact details, click “Confirm withdrawal”. Done.
Two-step. Verbatim. Locked.
Step 1 “Withdraw from contract”, step 2 “Confirm withdrawal” — the reference wording from the legislative explanatory memorandum. We deliver it server-side from a legal catalogue for seven EU countries. You can’t accidentally break it.
Shadow DOM capsule
The widget renders in its own shadow root. Your shop CSS stays out, our CSS stays in. No !important wars, no broken themes, no conflicts with Tailwind, Bootstrap or hand-hacked CSS from 2014.
Under 15 KB. Async. Defer.
The complete bundle weighs less than 15 KB gzipped. Loaded async and deferred, it blocks nothing, delays nothing. Your Lighthouse score won’t even notice.
Cryptographic audit proof
Every incoming withdrawal gets a SHA-256 fingerprint from shop ID, timestamp and content. Plus a public verification link. Plus a place in the daily Merkle root. Court-usable as durable-medium evidence — tamper-proof.
Frankfurt. No cookies. No tracker.
The widget runs on Hetzner in Frankfurt, sets zero cookies, reads no localStorage, loads no external scripts. You need no cookie-banner entry for us. GDPR Art. 28 data processing agreement included. Sub-processor list public.
Shopify, Woo, Shopware — and everything else
Theme App Extension for Shopify. GPL plugin for WooCommerce. Composer package for Shopware 6.6/6.7. Or a single script tag that also works in Magento, JTL, Gambio, PrestaShop, Wix, Jimdo or hand-coded shops. You need no developer.
Step-by-step guides for your shop system:
Legally compliant in 5 minutes
Register, get your script tag and embed it in your shop.
Start free now14 days free • No credit card required