Privacy Policy

Last updated: January 2026

1. Our Core Principle: 100% Client-Side

HyperGrad Tools is built on a fundamental privacy principle: all processing happens in your browser. We do not upload, store, or transmit your data to any server. When you use our tools — whether you're counting words, compressing images, generating passwords, or formatting JSON — the data you input never leaves your device.

2. What We Don't Collect

We do not collect the text, images, or files you process with our tools.
We do not store generated outputs (passwords, QR codes, hashes, etc.).
We do not require accounts, logins, or any personal information to use our tools.
We do not sell or share your data with third parties.

3. Analytics and Tracking

We use Baidu Analytics to collect aggregate, anonymized traffic statistics (page views, visit duration, geographic region). This helps us understand which tools are popular and improve our service. Baidu Analytics uses cookies to track sessions. You can disable cookies in your browser settings if you prefer not to be tracked.

We do not use Google Analytics, Facebook Pixel, or any third-party advertising trackers that profile your activity across the web.

4. Advertising

We may display ads (such as Google AdSense) to support the free operation of this site. Third-party ad providers may use cookies to serve relevant ads. You can opt out of personalized advertising via:

5. Local Storage

Some tools may use your browser's local storage to remember preferences (e.g., last used settings). This data is stored only on your device and is never transmitted to us. Clearing your browser data removes this information.

6. Third-Party Links

Our site contains links to other websites (such as our sister sites in the HyperGrad ecosystem). We are not responsible for the privacy practices of external sites. We encourage you to read their privacy policies.

7. Children's Privacy

Our service is not directed to children under 13. We do not knowingly collect personal information from children.

8. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated revision date.

9. Contact

If you have questions about this Privacy Policy, contact us at support@hypergrad.cn.