Privacy Policy
Last updated: March 2026
This is a personal website. I collect minimal data and respect your privacy.
Who I am
This website is operated by Tjeerd Prenger. You can reach me at [email protected].
What data is collected
Contact form. If you use the contact form, I collect your name, email address, and message. This data is used solely to respond to your enquiry. I store contact form submissions for up to 12 months, after which they are deleted.
Analytics. This site uses Google Analytics (measurement ID: G-1VY9SZR4TY) to understand how visitors use the site — which pages are visited, how long people stay, and what devices they use. Google Analytics collects anonymised data including your IP address (truncated), browser type, operating system, referring website, pages visited, and time spent. This data is aggregated and cannot identify you personally. Analytics data is retained for 14 months.
Cookies. This site uses cookies from the following services:
- Google Analytics — performance cookies to measure site usage. These are only set after you give consent.
- Cloudflare — essential security cookies (e.g.,
__cf_bm) to protect the site from malicious traffic. These are strictly necessary and do not require consent. - Vercel — hosting platform cookies for site functionality.
No advertising cookies or tracking pixels are used on this site.
Why this data is collected
- Contact form data: to respond to your message (legal basis: legitimate interest).
- Analytics data: to understand visitor behaviour and improve the site (legal basis: consent).
Third-party services
This site relies on the following third-party services, each with their own privacy policies:
- Google Analytics
- Cloudflare
- Vercel
- Sanity (content management)
Your rights
Under the GDPR, you have the right to:
- Access the personal data I hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Object to processing of your data
- Request data portability
To exercise any of these rights, email me at [email protected]. I will respond within 30 days.
Data transfers
Some third-party services (Google, Cloudflare, Vercel) may transfer data outside the European Economic Area. These transfers are covered by Standard Contractual Clauses or equivalent safeguards as described in their respective privacy policies.
Changes to this policy
I may update this policy from time to time. The date at the top of this page indicates when it was last revised.
Contact
For any privacy-related questions: [email protected]