Privacy policy ​

Last updated: November 9, 2026

Scope and operator ​

紫微研习社 (https://iztro.com, “this site”) is maintained by SylarLong and provides iztro developer documentation and introductory learning materials. This policy applies to the documentation pages on this site. For privacy questions, contact [email protected].

Linked chart, interpretation, AI platform, code hosting and payment services process data under their own policies. Linking to them does not bring them within this policy’s scope.

Browsing and analytics ​

You do not need to register or submit your name, birth date or birth time to read the documentation. Chart code and birth details in the documentation are teaching examples. When you run iztro in your own application, its implementation determines how data is processed.

This site uses Google Analytics and Baidu Analytics to understand traffic, page usage and device distribution, and to improve content and readability. These services may process pages visited, visit times, referring pages, browser and device information, approximate location derived from IP addresses, and cookies or similar identifiers. Hosting and network providers may also process IP addresses and access logs to deliver pages, maintain security and investigate faults.

See the Google Privacy Policy, how Google uses data from partner sites or apps and Baidu Privacy Policy.

Cookies and local storage ​

This site and its third-party services may use cookies or similar technologies to save display preferences, measure visits or support advertising. Your browser settings let you view, delete or block cookies and site storage. Clearing them may reset preferences or affect some third-party features.

You can also use the Google Analytics opt-out browser add-on to limit browser-based measurement by that service. The add-on does not control Baidu Analytics or other services.

Google AdSense and advertising ​

This site plans to use Google AdSense. This section describes processing after relevant ads are enabled; it does not mean that every page currently displays ads.

Once enabled, third-party vendors, including Google, may use cookies to serve ads based on your prior visits to this or other websites. Google’s advertising cookies allow it and its partners to serve personalized ads based on visits to this site and other sites on the Internet. Other participating third-party vendors or ad networks may also use cookies or similar technologies.

You can manage personalized advertising through Google Ads Settings, or manage personalized advertising cookies from some third-party vendors through the AboutAds choice tool. See Google’s ad technology provider information for information about advertising partners. Turning off personalized ads does not remove all advertising.

Where a consent or privacy settings control is available, you can use it to change or withdraw your choices. Features requiring prior consent should be enabled only after the applicable consent is obtained. Personalized ads for users in the EEA, UK and Switzerland require a Google-certified consent management platform. This policy does not itself replace consent management.

External resources and third-party services ​

Some pages load images or badges from GitHub, Shields.io, Skill Icons and other providers. When your browser requests these resources, providers may receive your IP address, browser information and referrer information sent under your browser’s policy. After following external links or using support channels such as PayPal, consult the relevant service’s privacy policy.

Before submitting birth details, conversations or other information to a chart, interpretation or AI service, check its privacy notice. Linking to these services does not automatically give this site’s documentation pages access to your accounts or conversations there.

Contact, retention and disclosure ​

If you contact the author by email, WeChat or GitHub, those services process the account, contact details and messages you provide. The author uses this information to reply, troubleshoot or follow up on requests. Do not send unrelated identity documents, passwords or other people’s sensitive information. Public GitHub discussions may be visible to others.

Contact records are kept as needed for replies and follow-up. Retention of analytics, log and advertising data depends on each service’s settings and policies. Providers may process data in other countries or regions. Information may also be disclosed where necessary under applicable law, in response to security incidents or to comply with lawful requests.

Your choices and privacy requests ​

Alongside browser and advertising settings, you can contact [email protected] with questions about this site’s processing or to request access, correction, deletion or withdrawal of consent under applicable law. Identify the service and your request; we may need to verify your connection to it. For data independently held by third parties, you may need to contact the provider directly.

Policy updates ​

Changes to analytics, advertising or other services will be reflected in this policy and its update date. Where a change requires renewed consent, that consent should be requested through the relevant mechanism.