Your data and choices
Privacy policy
How site usage, private feedback and browser-local learning preferences are handled.
Information used by the site
Across ZZGCopilot, Google Analytics 4, Vercel Analytics and Vercel Speed Insights may collect aggregated usage and performance information such as visited pages, device and browser details, referrals, interactions, approximate region and page performance. This helps improve content and diagnose technical problems. Administrative and sign-in pages do not load these site analytics components.
When you choose to submit the private contact form, the site processes the name, email, message and relevant page path you provide, together with an irreversible rate-limiting digest used to prevent abuse and maintain submission records. Contact records are stored in Neon PostgreSQL for the period needed to handle feedback, security auditing and necessary operations.
English learning preferences
The English learning pages store your completed and saved lesson IDs, last visited lesson and reading preferences in browser local storage. This state is local to your browser and device; the learning tools do not upload it to an account or provide cross-device synchronization.
You can remove this local learning state through your browser’s site-storage controls. Blocking or clearing local storage may prevent progress from persisting, while the public lessons remain readable.
Cookies and third-party services
Google, Vercel and any advertising services enabled in the future may use cookies, IP addresses, web beacons or similar identifiers for measurement or their relevant services. The private contact form uses Cloudflare Turnstile to assess automated abuse. Third parties may receive the network information needed to provide those services.
The site uses Google Analytics. You can limit cookies through browser settings or use Google’s Analytics opt-out tools. The use of information by Google is described in its partner-site policy.
Advertising and changes
If Google AdSense or another advertising service is introduced, the site policy will be updated with the relevant data-use and personalized-advertising information. Required consent and privacy choices will be provided in applicable regions.
This English explanation follows the existing published site policy and adds the English browser-local learning features. The original privacy policy was updated on 14 September 2026; this English explanation was prepared on 12 October 2026.
Questions
Use the protected contact channel for questions about the policy or personal data. The contact page shows whether its private form is currently available.