Privacy Policy - GuardPDF

GuardPDF uses a fully localized processing model:

• •All PDF file processing (merge, split, compress, convert, etc.) happens in your browser
• •File data is only stored in your device memory and automatically cleared after processing
• •Our servers do not receive, store, or analyze any files you upload
• •Tools work offline when installed as a PWA

To improve service quality, we only collect the following anonymous data:

We use the following local storage technologies to enhance your experience:

• •Language Preference: Remembers your chosen interface language (Chinese/English)
• •Theme Settings: Saves your light/dark theme preference

This data is only stored on your device and never uploaded to servers. You can clear this data anytime in your browser settings.

GuardPDF does not use any third-party data collection services. We promise:

We do not share, sell, or transfer your data to any third parties.

• •All processing occurs in your browser sandbox environment, completely isolated from external networks
• •We use modern web standards (like Content Security Policy) to prevent malicious script injection
• •HTTPS encryption protects your network communications

• •You own your file data completely—we cannot access or control it
• •You can stop using this tool at any time without account deletion (no registration required)
• •You can clear locally stored preferences in your browser settings

We may update this privacy policy from time to time. Major changes will be prominently announced on the homepage. Updated policies take effect immediately upon publication.

If you have any questions or suggestions about this privacy policy, please click here to contact us.