EU Data Check icon

EU Data Check

by Muhammed Akcan · eudatacheck.eu · Developer Tools
Manifest V3 in_app
View in Chrome Web Store Data as of 16 Oct 2026

Shows which companies and jurisdictions a web page sends data to. Runs locally; no browsing data is sent unless you opt in.

Users
7
store count
Rating
4.8 / 5
unchanged in 30 days
Ratings
5
total ratings
Store rank
#217K
#182K among extensions
Version
2.4.1
updated 7 Oct 2026

Users

monthly, 1 months
047Sep 2026Oct 2026Oct 2026
Latest, 16 Oct 2026: 7 usersMove the mouse over the chart for any month

Ratings count

monthly, 1 months
025Sep 2026Oct 2026Oct 2026
Latest, 16 Oct 2026: 5 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About EU Data Check

Find out in seconds which companies and countries a website sends its visitors' data to, and whether they are inside the EU. EU Data Check is built for web agencies, freelance developers and data protection officers who audit websites for GDPR problems. Open any page, click the icon, and see every third party the page contacts, grouped by the company behind it, with a clear rating for each. WHY INSTALL IT • Audit a page in seconds instead of digging through the browser's network tools. • See the company, not just the domain: fonts.gstatic.com and www.googletagmanager.com both show up as Google LLC, part of Alphabet Inc. (United States). • Catch common German audit findings at a glance: Google Fonts loaded from Google servers, embedded YouTube, Google Maps and reCAPTCHA, and analytics or advertising that loaded within the first seconds of a page (clearly labelled as a heuristic: "may have loaded before consent"). • Trust the result: every company in the dataset is backed by sources such as company registers, SEC filings, imprints and official documentation, with the date it was last verified. The popup links to them. Where sources are missing, the rating is "Unknown". The tool never guesses. • Keep your own data private: everything runs on your device. The extension sends no browsing data unless you opt in to reporting domains it does not know (never the page you visited). No account, no analytics, no telemetry. WHAT IT SHOWS • Every third party the page contacts, grouped by company: legal entity, country, ultimate parent company and category (analytics, advertising, fonts, CDN, video, maps, captcha, payments, chat/support, consent management). • Who owns the network the response came from, and, for cloud regions the provider publishes, where the server is. • A rating per company and for the whole page: – EU-controlled: operator and network owner are companies controlled from the EU/EEA – EU location, non-EU control: served from an EU/EEA location, but controlled from outside – Non-EU: the operator or network owner is controlled from outside the EU/EEA – Unknown: not enough verified data • The reason behind every rating, for each company and each request. • "After your action": which third parties were only contacted after you clicked or typed on the page, for example a sign-in button, and which the page loaded on its own. • The toolbar badge shows the page rating and the number of third parties before you even open the popup. HOW IT DECIDES A company counts as EU-controlled when it and its ultimate parent company are incorporated in the EU/EEA, and both facts are sourced. Switzerland, the United Kingdom and other countries outside the EU/EEA are shown by name and count as non-EU; adequacy decisions are not taken into account. When the dataset knows the company operating the site itself, such as youtube.com (Google), the site is rated too. The page rating is the worst rating among its third parties and the site itself. PRIVACY All analysis happens on your device. The company data ships with the extension; with a Pro licence, updates are downloaded once a day. Results for a tab are kept in memory only and deleted when you close the tab or load another page. Privacy policy: https://eudatacheck.eu/datenschutz/ Available in English and German. Technical observation, not legal advice. EU Data Check is a product of Akcan-IT and is not affiliated with the European Union.

Growth

WindowUsersChangeRatingsRating
7 days−2−22.2%+1+0.05

Version history

6 versions recorded
2.4.17 Oct 2026
2.4.06 Oct 2026
2.3.01 Oct 2026
2.1.028 Sep 2026
2.0.026 Sep 2026
1.0.025 Sep 2026

Details

Category
Developer Tools
First seen
25 Sep 2026
Size
2.1 MB
Languages
de, en
Pricing
in_app
Privacy policy
eudatacheck.eu
Support
eudatacheck.eu
Extension ID
oknekfmidgfkkfjggcapaclbociokmdn

Permissions and risk

Elevated riskimpact 3, likelihood 3
Permissions
webRequeststorage
Site access
<all_urls>
Can read and change data on every website you visit.

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