Privacy

What this site measures, what it keeps and for how long. Last updated on 2 November 2026.

Who is responsible

Fundamentals is a personal, non-commercial website, run by the owner of treehouseintheforest.nl. For questions about privacy, or to use your rights, send an e-mail:

Google Analytics, only with your consent

Fundamentals uses Google Analytics to see which pages are read and how people find them, so the site can be improved. It starts only after you choose Accept; until then nothing is loaded from Google and no cookies are set. The legal basis is your consent (article 6(1)(a) of the GDPR).

  • What is measured: the pages you open, when, how you arrived (for example from a search engine), your type of device and browser, screen size, language, and an approximate location (country and city).
  • Cookies: after you accept, Google Analytics sets the cookies _ga and _ga_D8E1RSPL4E, which hold a random identifier so that repeat visits can be counted. They expire after 2 years, or earlier when you decline or delete them.
  • IP address: according to Google, Google Analytics does not log or store IP addresses of visitors from the EU, the UK or Switzerland; it uses them only to derive the approximate location and then discards them.
  • Switched off: advertising features, ad personalization and Google signals (linking with Google accounts).
  • How long: Google keeps the measured data for at most 14 months.
  • Who receives it: Google Ireland Limited, which runs Google Analytics in the EU. Google may process the data outside the EU, including in the United States; Google LLC takes part in the EU–U.S. Data Privacy Framework. See Google's privacy policy.

To withdraw your consent, choose Analytics settings at the bottom of any page and then Decline. Measuring stops at once and the Google Analytics cookies are removed.

Fundamentals is part of treehouseintheforest.nl, which uses the same Google Analytics property with the same consent bar: one choice counts for the whole site. The privacy statement of the whole site also covers its other projects.

Server logs

Like every web server, the server of this site writes a line for each request: your IP address, the date and time, the page or file requested, the response, the page you came from and your browser's identification. These logs are used only to keep the site secure and to find faults (legitimate interest, article 6(1)(f) of the GDPR). They are deleted automatically after 14 days.

Settings in your browser

Some choices are remembered in your browser's local storage: the light or dark theme, the region for laws and standards, and your analytics choice. They stay on your device and are not sent to this site or anyone else. Clearing your browser's site data removes them.

Only when you ask

  • The DNS tool on the DNS page works offline. Only when you choose to look a name up live does it send that name to Cloudflare's DNS service, after a notice.
  • Fonts, videos and code libraries are served by this site itself, not by other companies. The only exception is Google Analytics, and only after you accept.
  • Links to other websites lead to sites with their own privacy policies.

Your rights

You can ask for access to your personal data, for correction or deletion, or object to its use, by e-mail (see above). Google Analytics data is stored under a random identifier, not under your name, so this site usually cannot find which data is yours; declining in Analytics settings or deleting the cookies stops any further measuring. If you are not satisfied with the answer, you can file a complaint with the Dutch data protection authority, the Autoriteit Persoonsgegevens.