Privacy — the short version
We do not have your data. That is not a slogan but a consequence of how the site is built: no server that could receive anything, no database that could hold it, no account for you to log into.
What is remembered, and where
Four things, all of them in your own browser, in the storage browsers call localStorage:
- your reading balance — how much news you want, how hard you want it to land, and any subjects you have muted
- your interests — the sections and subjects you picked, including anything you ticked under health, and any topic you typed in yourself. Typed topics are matched against headlines and summaries inside your own browser; we never see the words you typed
- the place you chose for the weather
- whether you prefer the light or the dark version of the page
None of it is sent to us, because there is nowhere to send it: this is a static site, a folder of files. Your personal page is assembled by your own browser from a list of articles identical for every reader, so ranking it tells us nothing about you. No login, no profile on our side, nothing for us to look at.
That matters most for the health interests. What you tick there is among the most sensitive things a person can say about themselves, and our answer is architectural rather than a promise: it stays with you. A ticked box means “this interests me”, never “I have this”. We do not treat you as a patient, and nothing here is medical advice. For that, ask your doctor.
The site sets no cookies of its own. None at all.
Clear your browser data and it is gone, and we have no copy to restore it from. It also does not follow you to your phone or another browser. You would set it up again there, which is the honest price of having no accounts.
What other people see
We would rather name them than let you find them.
- GitHub Pages hosts the site. Like any host, it sees the IP address and browser of everyone who loads a page, in its server logs.
- Open-Meteo provides the forecast, air quality and pollen, and RainViewer provides the rain radar. Open the weather page and they receive the coordinates you searched for. They cannot answer without them. If you press “use my location”, the browser gives those coordinates to the forecast call and to nothing else — we deliberately do not use a service that turns coordinates into a place name, because that would mean handing your exact position to a further company purely to print a label.
- OpenStreetMap draws the map under the radar and unpkg.com delivers the mapping code. Both see your IP, and only on that page.
- Photographs come from Wikimedia Commons and Openverse under free licences. We download them at build time and serve them from our own address, so those sites never see you. The exception is a republished article, where pictures may still load from the original publisher.
The one-pixel counter
Articles we offer to other outlets for free republication carry a transparent image, one pixel by one pixel, pointing back at us with the article’s name in the address. Its job is to count how often a republished piece gets read elsewhere. It sets no cookie, carries no identifier, and holds nothing about the reader. It appears only in those copies, never on this site.
How this is written
Parts of this newsroom are automated, drafts are produced with the help of AI, and everything is measured against a fixed set of editorial rules before it appears. Sensitive categories never publish without a human first. More on the about page.
Ask us anything
jarda.vojtasek@centrum.cz
That includes “what do you have on me”. The answer is nothing, and we will gladly explain why.