Cookies
Cookie usage — only when consent is configured. Essential preferences use localStorage, not cookies.
This site does not use nonessential cookies by default. Essential preferences like theme are kept in localStorage on your device.
Overview
No cookie banner is shown solely for essential preference storage. A banner will only appear if nonessential cookies (analytics, ads) are added — see Privacy: Local data. This deployment currently sets no nonessential cookies.
If cookies are introduced later, this page will list their purpose, duration, and controller, and consent controls will appear.
Local storage vs cookies
Saved items, progress, and history live in localStorage under cf:state:v2 — not in cookies and not sent to the server. You can export or reset them at Saved and History.
Why no banner
We do not show a cookie banner when only essential device-local storage (theme) is kept in localStorage; banners create consent fatigue without benefit. See Privacy for the full data flow, including hosting logs and the conditional Web Search/KaTeX origins.
Details
Last updated: 2026-08-23.