Privacy Policy

1. Who we are

This website (endril.com, "the Site") is maintained by Endril Li (李义洵) as a personal site of tools and notes about spatial intelligence, remote sensing, and automation systems. If you have any questions about this policy, contact us at author@endril.com.

2. Information we collect

We follow a "data minimization" principle:

• Information you provide: content and email you submit through comments, contact forms, or the tipping feature (used only to reply to you).
• Automatically collected technical data: access logs (IP address, browser type, visit time, referrer) for security and anonymous traffic analytics.
• Cookies and similar technologies: see Section 3.

We do not sell your personal information, and we do not share personally identifiable information with advertisers.

3. Cookies and similar technologies

Cookies are small text files stored in your browser. We use two kinds:

• Strictly necessary cookies: required for basic site functions (e.g., remembering your theme preference).
• Third-party advertising cookies: we use Google AdSense to display ads. Google and its partners may use cookies (including _ga and advertising cookies) to serve personalized or non-personalized ads and to measure ad performance.

Visitors in the EU (GDPR) see a consent banner on their first visit and may accept or reject non-essential cookies. Rejecting does not affect your ability to browse the Site.

4. Advertising (Google AdSense)

We use Google AdSense to serve ads. Google may serve personalized ads based on your browsing activity. You can:

• Opt out of personalized ads via Google Ads Settings;
• Manage third-party ad preferences via Your Online Choices (EU);
• Disable or clear cookies in your browser.

Google's privacy practices are governed by its Advertising Privacy Policy.

5. Your rights

Under applicable data protection laws (such as GDPR and CCPA), you have the right to access, correct, delete, and object to or restrict the processing of your personal data. To exercise these rights, email author@endril.com and we will respond within a reasonable time.

6. Changes to this policy

We may update this policy from time to time. Material changes will be posted on this page with an updated "Last updated" date. We recommend reviewing it periodically.