Privacy Policy

Last updated: January 2025

At PDFZen4u, your privacy is not a feature — it is the foundation of how we built this product. This Privacy Policy explains what information we collect, how we use it, and what we absolutely do not do with your documents.

1. Your Files Stay on Your Device

The most important thing to understand about PDFZen4u is that your PDF files are never uploaded to our servers. All PDF processing — merging, splitting, compressing, rotating, watermarking, and all other operations — happens entirely within your browser using JavaScript libraries (pdf-lib and PDF.js).

This means:

• No PDF file you use on PDFZen4u is ever transmitted over the internet
• No PDF file you use on PDFZen4u is ever stored on our servers
• No PDF file you use on PDFZen4u is ever seen by us or any third party
• Your files remain on your device at all times

2. Information We Collect

We collect minimal information to keep the service running and improving:

Analytics Data

We use Google Analytics to understand how visitors use PDFZen4u. This includes pages visited, time spent on the site, browser type, device type, and general geographic location (country/city level). This data is anonymised and aggregated — it does not identify you as an individual. Google Analytics data is subject to Google's Privacy Policy.

Advertising

PDFZen4u displays advertisements served by Google AdSense. Google may use cookies and similar technologies to serve ads based on your prior visits to our website or other websites. You can opt out of personalised advertising by visiting Google's Ads Settings. PDFZen4u itself does not receive any personal data from these advertising services beyond aggregate performance metrics.

Cookies

PDFZen4u uses the following cookies:

• pdfzen-lang: Stores your language preference (stored in localStorage, not a cookie)
• Google Analytics cookies: Used for anonymous traffic analysis (_ga, _gid)
• Google AdSense cookies: Used for ad targeting and frequency capping

Language Preference

If you select a language using the language selector, that preference is stored in your browser's localStorage. It never leaves your device.

3. How We Use Information

We use the information we collect solely for:

• Understanding which tools are most used, to prioritise improvements
• Diagnosing technical problems that affect the service
• Measuring the effectiveness of the website for operational purposes

We do not sell, rent, or share your personal information with third parties for their marketing purposes.

4. Third-Party Services

PDFZen4u uses the following third-party services:

• Google Analytics: Anonymous traffic analysis — Privacy Policy
• Google AdSense: Advertisement serving — Privacy Policy
• Google Fonts: Font loading (requests made to Google's servers) — Privacy Policy
• unpkg.com / Cloudflare: CDN delivery of JavaScript libraries (pdf-lib, PDF.js) — files are loaded from CDN on page load
• Buy Me a Coffee: Optional voluntary support platform — Privacy Policy

5. Children's Privacy

PDFZen4u does not knowingly collect personal information from children under the age of 13. If you are a parent or guardian and believe your child has provided personal information to us, please contact us and we will delete such information promptly.

6. Data Security

Because your PDF files never leave your device, the security of your documents is entirely within your own control. For analytics and advertising data collected by third-party services, those providers maintain their own security standards, which you can review in their respective privacy policies linked above.

7. Your Rights

Depending on your location, you may have the following rights regarding your personal data:

• Right to access: Request a copy of the personal data we hold about you
• Right to deletion: Request that we delete your personal data
• Right to opt out: Opt out of personalised advertising via Google's Ads Settings

Since we collect minimal data, most requests can be addressed by managing your browser cookies and opting out of Google services directly.

8. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will update the "Last updated" date at the top of this page. We encourage you to review this policy periodically.

9. Contact Us

If you have any questions about this Privacy Policy or our data practices, please contact us via our Contact page.