Cookies
- Status
- Current
- Updated
- 2026-09-18
- Scope
- Account / Docs
Effective 18 September 2026.
Every cookie this site uses is first-party, and all of them serve sign-in itself. There are no third-party cookies, no advertising identifiers, and no cookies used for cross-site tracking.
That is why you will not see an "Accept all cookies" banner here — there is nothing to decline.
This is a translation. The Chinese version governs if the two differ.
What they are used for
| Purpose | What it means |
|---|---|
| Keeping you signed in | So you do not have to sign in again on every page |
| Remembering this device | Maintaining your signed-in state on this device |
| Remembering your last sign-in method | The sign-in page marks which one you used last, so you do not have to guess |
| Preventing others from acting as you | Stops another site from making your browser act on your behalf |
What these cookies hold are random identifiers. They do not contain your username, email, password or any other personal information.
When you browse public content signed out, we set no cookies at all.
How long they last
Sign-in cookies have a defined lifetime and expire on their own. You can also end them yourself at any time:
- Sign out
- End a sign-in or a device under Account → Security
- Click "Not me" on the sign-in page to clear the "last sign-in method" hint
- Clear this site's cookies in your browser
Can they be turned off?
The ones required to stay signed in cannot be switched off individually — without them you cannot remain signed in, which is a technical fact rather than a product choice. You are free to browse public content signed out.
The "last sign-in method" hint can be turned off on its own: click "Not me" on the sign-in page.
Not cookies, but also stored in your browser
Your reading preferences on the docs site (light/dark, text size, focus reading) and the state of the "remember password" checkbox on the sign-in page are kept in your browser's local storage.
They stay on your device and are never uploaded. Clearing them only resets those preferences.
Related
- Privacy policy — what we collect, how long we keep it, and your rights
- Terms of use