Cookie policy
Below you will find information about our use of cookies, our traffic measurement and external services: what we use and why.
Last updated: September 2026
What we always store
In your browser storage we keep the theme and language you chose and the privacy settings you selected, so that we do not have to keep asking about your choice. This information stays in your browser, is never sent anywhere and is shared with nobody.
What we need
Pages with forms are protected against automated abuse by Turnstile, a widget from Cloudflare. It checks that a form is being sent by a person, not a script. The check is automatic, usually runs in the background and you will not notice it. It loads only when you submit a form and is not present on the other pages.
Without this widget the forms do not work. It runs regardless of how the consents are set. It serves only to protect the form. If that is a problem for you, write to us by email instead of using the form.
Submitting a form therefore requires JavaScript to be enabled in your browser.
How we measure
We measure visits and page loading speed ourselves, on our own infrastructure. We use no third-party analytics systems for it. Until you give us your consent we use no cookies for the measurement either, and no other data stored in your browser; the one cookie we do use for it is described below and is only set once you have consented. We pass the measured values to nobody and use them only for statistics about visits and the performance of the site.
What we measure regardless of your consent
We measure which page was displayed, where you came from, how long it was open, how quickly it loaded and whether anything on it failed. From your connection we also determine the country and the device type. We do not store your IP address in these statistics. Apart from what you send us yourself through the form, we store no data in the statistics intended to identify an individual visitor.
Technical measurement — only after your consent
Once you consent, we additionally measure technical information such as the size of the browser window, the colour scheme you have set and support for selected web technologies. We use this to adjust the site so that it works correctly for as many visitors as possible. We also store a single cookie in your browser, named _vd, valid for 30 days. It holds one thing: which days you visited the site, over the last 30 days at most. It serves one purpose — telling us how many visitors come back. The cookie is private, no script on the page can read it. From it we derive only the number of days, not the list itself, and we pass it to nobody. If you withdraw your consent, the cookie is deleted. We do not use the measured data to identify an individual visitor, nor do we pass it to third parties.
By consenting you help us make these pages better. Thank you.
Embedded external services
We need your consent in order to load optional third-party services, such as Google Maps. Without your consent we do not load them and the relevant parts of the site are unavailable.
No advertising, no third-party tracking
Unless stated otherwise, the site contains no advertising or third-party tracking systems.
Changing your consent
You can change your settings at any time through the link in the site footer. The site works even without consent to the optional features.