This site sets no cookies.
Not “essential only”, not “we respect your choices” — none at all. That is why you were never asked.
Why there is no banner
A consent banner exists to ask permission for storage that is not necessary — analytics, advertising, cross-site measurement. There is none of that here: no analytics, no advertising, no tag manager, no social embed, no third-party script at all. With nothing to ask about, a banner would be theatre, and the cost of theatre is that people learn to dismiss banners without reading them.
If that ever changes, the banner appears before the thing it is asking about does, and this page changes with it.
What is stored — and none of it is a cookie
A short list of keys in your browser's local storage. The distinction matters in practice rather than only in law: a cookie is attached to every request your browser makes to the server, and these are never sent anywhere at all. They are written only when you take an action, and they stay on your device.
| Key | Written when | Purpose |
|---|---|---|
| cl:theme | When you switch to the light theme | So the choice survives a reload. Cleared when you switch back to dark. |
| cl:favourites | When you star a chart | A list of chart slugs, so the rail and device-local watchlist can show them. Never leaves the browser. |
| cl:saved-views:v1 | When you press Save view on a chart | The chart path, analytical URL state, name and save time. Never leaves the browser. |
Turning them off
Clear site data in your browser, or use a private window, and all are gone. Nothing breaks: the site returns to the dark theme with no starred charts, which is the state a first-time visitor sees. Blocking storage entirely also works — the code handles the exception and carries on rather than failing.
What the host sees
Serving a page involves a request, and the host that serves these files keeps standard access logs — address, time, page, browser string — as any web server does. That is not a cookie and not something this site controls or reads. It is described in the privacy notice, along with the only other third party involved anywhere: the mailbox that receives an email if you choose to send one.