Privacy
Privacy information
This site currently has no account system, comment area, contact form, or advertising scripts. We use Umami for website analytics. We do not ask visitors to submit personal information through the site.
Hosting and technical requests
This static site is hosted on Cloudflare Pages. Cloudflare may process technical request data such as IP address, user agent, and requested URL to deliver and protect the service, under its own policies. If the host or services change, this notice will be updated.
If you choose to email the site owner at qsyhxw@gmail.com, Google processes that message as part of its email service. Do not include sensitive information you do not want sent by email.
Website analytics
Umami is loaded on every page, including About, Contact, Privacy, and error pages, from umami-nine-rust.vercel.app, hosted on Vercel. The tracking script sends page-view data to that service, including the page URL and title, referring URL, browser language, and screen dimensions. Requests also expose technical connection data to the service and its hosting provider. Avoid putting sensitive information in page addresses or URL query parameters. Calculator inputs are not included in the page-view payload.
Cookies and advertising
No analytics or advertising cookies are intentionally set by this site. The site does not currently load ad networks. Hosting infrastructure or linked third-party sites may have their own practices; links leave this site and are covered by their operators’ policies.
Changes and contact
If services are added or changed (for example, advertising or a form), this notice will be revised. Questions: qsyhxw@gmail.com.