1. Information We Don't Collect

PDflow runs entirely on your computer. We do not operate cloud servers, do not collect usage telemetry, do not log your files, and do not require an account. The only data the app stores is what you explicitly save to your local disk.

2. Analytics on the Website

This website (yinliupdflow.com) uses Umami Cloud, a privacy-friendly analytics service. Umami records anonymous page views, button clicks, and aggregate navigation patterns. It does not track you across other websites, does not use cookies for advertising, and does not store IP addresses. The data is used solely to understand which parts of our site are useful.

3. Download Links

When you download PDflow, your browser may pass the standard HTTP referrer and user-agent to GitHub's release server. We do not receive this information.

4. Updates & Crash Reports

The app can check for updates over HTTPS. It sends your current version number and platform to GitHub Releases; nothing else. We do not collect crash reports, error logs, or stack traces automatically. If you encounter a bug, please report it manually via the GitHub issue tracker.

5. Your Rights

Because we don't collect your data, there is nothing to access, export, or delete. If you contact us by email, we keep the message until you ask us to delete it, and we never share it with third parties.

6. Children

PDflow is not directed at children under 13. We do not knowingly collect any information from children. The app is a tool, not a service — there is no signup and no profile.

7. Changes to This Policy

We may update this policy as the product evolves. Material changes will be announced on the blog and noted by a new "Last updated" date. Continued use after a change indicates acceptance.

8. Contact

Questions? Email support@yinliupdflow.com or open an issue on GitHub. We respond within 2 business days.