PRIVACY & STORAGE
Your workspace stays in your browser.
Updated November 8, 2026.
Saved items, notes and plans
These records are stored locally in your current browser. Both language editions use the same storage. They are not uploaded to a member database and do not sync across devices. Clearing site data deletes them. Use Backup & restore to download or restore your records.
Private contact requests
The separate contact form stores your category, title, message, status, reply and timestamps in Cloudflare D1 for request handling. No name or email is required. A receipt code controls access; its hash is stored on the server. Keep the code safe because it cannot be recovered. Requests are cleaned up after 180 days when the service receives requests.
Hosting and analytics
Cloudflare hosts this site. We use Cloudflare Web Analytics to understand visits and page views. Requests for hosting and analytics are sent to Cloudflare. The Korean workspace also requests icons from the unpkg CDN. Hosting providers may process IP addresses and routine connection information for security and operations.
Access protection
The contact service temporarily stores hashed IP-and-time-window identifiers and request counts to limit abuse, not raw IP addresses in the inquiry database. Administrator sessions use a secure cookie valid for up to eight hours.
External links and clipboard
Source and font links take you to third-party websites, whose policies apply. Copy buttons access the clipboard only when clicked. There are currently no advertising scripts or email subscription forms. Please do not put sensitive personal information in notes or inquiries.