About StackPatrol

Most websites have no idea what they actually load. Marketing tags, fonts, embeds, CDNs, RUM beacons and analytics pile up, often added by different teams over years. Few people can list them all, and fewer still can say where the data goes.

Existing tools are either heavy compliance suites priced for enterprises, or browser extensions aimed at end-users. We wanted something in between: a fast, free, technical scan that gives a European startup, agency or consultant a clean overview in under a minute.

• Transparency over magic. Our methodology page explains exactly what we measure and how the score is computed.
• European alternatives matter. For every common US-owned vendor we surface a curated list of European or independent alternatives, so teams can make informed choices.
• Privacy by default. We don’t track visitors with third-party analytics. Scan results are stored only when you explicitly share a report.
• Open methodology, not legal advice. StackPatrol is a technical scanner. It does not certify GDPR compliance and it is not a substitute for a privacy lawyer or DPO.

• A consent-management platform.
• A GDPR / DSA compliance certification service.
• A pen-testing or security scanner.
• An advisory firm: we have no commercial relationship with any of the vendors we list.

The vendor database is hand-curated. Each entry contains the vendor name, country and ownership region, what it does, and curated European alternatives. We add new vendors continuously as we encounter unmatched third-party domains.

Browse the full list in the vendor directory.

Found a wrong classification, missing vendor, or a bug? Want to partner, embed or self-host? We’d love to hear from you.

Use the waitlist form on the home page; it reaches us directly.