Privacy notice
Controller
Markus Zürn, Kyffhäuserstrasse 11, 10781 Berlin, Germany
E-mail: markus@zuern.berlin
Hosting and server log files
This website is hosted by STRATO AG. When you open a page, the server processes technically necessary data: IP address, date and time, requested file, referrer URL and browser or device information (server log files).
The purpose is to deliver the website, keep it secure and find errors. The legal basis is Art. 6(1)(f) GDPR (legitimate interest in secure and functional operation). Retention is determined by the hosting provider’s settings.
Analytics with GoatCounter
To understand usage I use GoatCounter (goatcounter.com). GoatCounter uses no cookies and, according to the provider, does not store IP addresses or user-agent data, only aggregated statistics such as page views per page. According to the provider it is practically impossible to identify individual people.
When a page loads, a script is loaded from gc.zgo.at and the page view is sent to markuszuern.goatcounter.com. For technical reasons the provider receives your IP address in that request.
The legal basis is Art. 6(1)(f) GDPR. My legitimate interest is to understand which content is used so I can improve the website.
Fonts
The fonts used (Josefin Sans, Inter, Newsreader) are delivered from my own server. No connection is made to Google Fonts or other font providers.
Contact and workshop sign-up by e-mail
If you write to me or sign up by e-mail, I process your details (for example name, e-mail address, message) to handle your request. The legal basis is Art. 6(1)(b) GDPR (contract or pre-contractual steps) or (f) (legitimate interest in answering enquiries). Data is deleted once it is no longer needed and no statutory retention duty applies.
Web Fitness Check (zuern.berlin/check)
When you enter a website address into the Web Fitness Check, my server fetches the publicly visible home page of that website and checks it. The address is sent to Google PageSpeed Insights (Google Ireland Ltd.) to measure load time. Results are cached on the server for up to 12 hours. Legal basis is Art. 6(1)(f) GDPR (legitimate interest in providing the requested check).
For the full report you provide your first name, email address, mobile number and, optionally, wished-for search terms. I use them to create the report and to contact you about it by email or phone. Legal basis is your consent under Art. 6(1)(a) GDPR, which you can withdraw at any time by emailing markus@zuern.berlin. Your details are stored on the server at STRATO and emailed to me; I delete them when they are no longer needed for contacting you, at the latest after 12 months unless a business relationship arises.
For the full report only the website address (and any wished-for search terms) is sent to DataForSEO (dataforseo.com) to retrieve search visibility data. Your contact details are not passed to DataForSEO or Google.
External links
This website links to external services, for example Google Calendar (appointment booking), LinkedIn and Instagram. When you click, you leave my website. The respective providers are responsible for data processing there. No content from these services is embedded in the page.
Your rights
You have the right of access, rectification, erasure, restriction of processing and data portability. You may object to processing based on Art. 6(1)(f) GDPR.
You also have the right to lodge a complaint with a data protection authority, for example the Berlin Commissioner for Data Protection and Freedom of Information (datenschutz-berlin.de).
Status
September 2026. I will update this notice when services or the legal situation change.