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It sets one technical cookie, lang, when you choose a language with the switch, so the next visit opens in that language. It holds only the language code and lasts a year.

The check-up and the calculators run in your browser. Your answers are not sent anywhere unless you press a button that sends them, and then they go by the channel you chose.

The site is served by Cloudflare, which processes technical request data such as your IP address to deliver pages and protect the site.