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Privacy

What this site measures, what it keeps and for how long. It covers the whole of treehouseintheforest.nl: the home page and every project, Fundamentals included. Last updated on 5 November 2026.

Google Analytics counts visits, but only if you accept it in the bar at the bottom of the page. One choice counts for the whole site, and you can change it here at any time.
The web server keeps a standard log of requests for 14 days, for security and troubleshooting.
Several projects load fonts or code libraries from other servers, which then see your IP address.
No advertising, no accounts, no forms; your settings stay in your own browser.

Your choice

Accept or decline Google Analytics, or change an earlier choice:

Who is responsible

Treehouse in the Forest 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

Google Analytics shows which pages are visited and how people find them, so the site and its projects can be improved. It starts only after you choose Accept; until then nothing is loaded from Google Analytics 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, use Change my choice above and choose Decline (in Fundamentals also Analytics settings at the bottom of every page). Measuring stops at once and the Google Analytics cookies are removed.

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.

Libraries from other servers

Some pages load files from other companies' servers. Your browser then sends those servers your IP address and browser identification, as with any web request; this site does not receive anything from them.

jsDelivr (cdn.jsdelivr.net): code libraries for orbit orchestra and weatherstation.
cdnjs (cdnjs.cloudflare.com, run by Cloudflare): code libraries for orbit orchestra.
flagcdn.com: country flags in little network professor.

Fundamentals and split-flap display load nothing from other servers (apart from Google Analytics after you accept). The live data in the projects (space weather, planets, weather, satellites) is fetched by this site's own server, without any information about you.

Settings in your browser

Some projects remember settings in your browser's local storage: your artwork in iridis, the theme in little network professor and Fundamentals, the chosen region in Fundamentals, the selected satellite groups and (for one visit) the camera position in orbit orchestra, the board in split-flap display, 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 in Fundamentals 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.
The reverse DNS tool in little network professor looks up the address or name you enter through the DNS service of this site's server.
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 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.