Site operator
aifincode is independently operated by Luo Jie. Privacy questions can be sent to jieluo1024@gmail.com.
Information you provide
The site does not require an account. If you send email, we receive your address, message, and any information you choose to include. It is used to read and answer the message, process a correction, and retain necessary correspondence. Do not send passwords, API keys, account numbers, identity documents, or similar sensitive data.
Hosting and security logs
Hosting and network providers such as Vercel may process IP addresses, request times, browser or device information, requested paths, response status, and security events to deliver pages, prevent abuse, and keep the service reliable. Retention and processing depend on the provider's terms and configuration.
Vercel Analytics and performance metrics
The site uses Vercel Web Analytics to understand anonymized, aggregate visit trends, including page views, referral sources, country or region, device, operating system, and browser categories. Beyond page views, the site reports only a small set of anonymous events used to improve the experience, such as staying for 30 seconds, reading to 90%, using a tool, copying a citation, printing, submitting an on-site search, or continuing from an article to a related series, guide, or tool. Content-follow events include only the source path, destination path, and interface location of the link. Search events include only character count and whether a filter or suggestion was used, never the actual search terms. Calculator inputs, email contents, and other form values are not reported.
The site also uses Vercel Speed Insights to aggregate loading, responsiveness, and visual-stability metrics such as LCP, INP, and CLS. To reduce accidental data collection, query parameters and URL fragments are removed from Web Analytics and Speed Insights events before they are sent. The service is used to identify experience problems in real browsing conditions and does not record content you enter on the page. Vercel states that Web Analytics does not use cookies and stores analytics data anonymously.
Google Analytics
Google Analytics loads only when the site operator enables an Analytics identifier in the hosting environment. It is used to understand aggregate visit trends such as page views, referral source, device category, and on-site interactions that exclude form values. Google may process visit data using cookies, local storage, IP addresses, and other identifiers. Values entered into calculators are not sent as Analytics events. Browser privacy controls, content blockers, and Google's opt-out tools can limit this processing.
Google AdSense and advertising
Google AdSense code loads only when a publisher identifier is configured in the hosting environment for site review. Clearly labeled, post-content ad units are configured only after the account and site are eligible. Where applicable law and consent settings permit, Google and its partners may place or read cookies, use web beacons, receive IP address information, and measure or personalize ads. Ad availability, personalization, and consent choices vary by region. In regions where consent is required, choices should be provided through a Google-certified consent management solution configured for the AdSense account.
See How Google uses data from partner sites ↗ and My Ad Center ↗。
Language preference cookie
When you choose the Chinese version, the site may store a `site-locale` cookie to preserve that preference on later visits. It does not contain your name, email address, or calculator inputs.
External links, retention, and choices
External sites have their own privacy policies. Information received directly is kept only as long as needed for operations, corrections, security, or legal obligations. You may email to ask about personal information held directly by the site or request correction or deletion, subject to legal duties and necessary security records.
Changes and contact
The date on this page changes when analytics, advertising, or information practices materially change. For privacy questions, email jieluo1024@gmail.com。