Privacy Policy

PDF Reader: Document Viewer · Last updated: July 20, 2026

This Privacy Policy explains how the PDF Reader: Document Viewer mobile application ("the App", "we", "us") handles your information. By using the App you agree to the practices described here.

In short: Your documents and files are processed entirely on your device and are never uploaded to us or any server. We do not require an account, and we do not sell your data. The only information that leaves your device is anonymous crash and usage diagnostics collected through Google Firebase, used solely to keep the App stable and improve it.

1. Information We Do Not Collect

Your documents, PDFs and files. Opening, reading, annotating, signing, scanning, converting, merging, splitting, compressing, protecting or otherwise processing files happens locally on your device. We never see, receive, upload or store the contents of your files.
Personal identity. The App has no sign-up or login. We do not ask for your name, email, phone number, address or any account credentials.
Camera images. Photos captured with the document scanner are processed on your device to create PDFs and are stored only on your device. They are not transmitted to us.

2. Information Collected Automatically (Diagnostics & Analytics)

To keep the App reliable, we use Google Firebase services, which automatically collect limited, non-identifying technical data:

Firebase Crashlytics — collects crash reports and stability data, such as the type of crash, stack traces, device model, operating system version, and app version, so we can diagnose and fix problems.
Firebase Analytics — collects aggregated, anonymized usage statistics such as which features are opened, session counts, device type, language and general region, and app-instance identifiers. This helps us understand how the App is used and where to improve it.

This data does not include the contents of your documents and is not used to personally identify you. Data collection by these services is governed by Google's Privacy Policy and Firebase's Privacy and Security terms.

3. Permissions We Request

Storage / All files access (READ_EXTERNAL_STORAGE, MANAGE_EXTERNAL_STORAGE) — required so you can open PDF files from anywhere on your device and save your edited, converted or scanned documents back to your chosen location. The App accesses files only to perform the action you request; it does not read or upload your files in the background.
Camera (CAMERA) — used only when you use the document scanner to capture pages and turn them into PDFs. Images are processed on-device.
Notifications (POST_NOTIFICATIONS) — used to show status of tasks (for example, completion of a conversion or export). You can disable notifications at any time in your device settings.

4. How We Use Information

The limited diagnostic and analytics data described above is used only to:

Detect, diagnose and fix crashes and bugs;
Understand which features are used so we can improve the App;
Maintain the security, performance and stability of the App.

We do not use your information for advertising, and the App does not display third-party ads.

5. Sharing of Information

We do not sell, rent or trade your information. We do not share your documents with anyone. The only third-party processor involved is Google (Firebase), which processes the diagnostic and analytics data described in Section 2 on our behalf. We may disclose information if required to do so by law or valid legal process.

6. Data Retention

Your documents remain on your device and under your control; you can delete them at any time using your device or file manager. Crash and analytics data retained by Firebase is kept according to Google's standard retention periods (for example, Analytics data is retained for a limited period and crash data for a limited window), after which it is deleted or aggregated.

7. Data Security

Because your files stay on your device, their security is primarily governed by your device's own protections (lock screen, encryption, etc.). Diagnostic data transmitted to Firebase is sent over encrypted connections. No method of transmission or storage is 100% secure, but we take reasonable measures to protect the limited data we handle.

8. Children's Privacy

The App is not directed to children under the age of 13 (or the minimum age required in your jurisdiction), and we do not knowingly collect personal information from children. If you believe a child has provided us information, please contact us and we will take appropriate steps.

9. Your Rights

Depending on where you live (for example, under the GDPR in the EEA/UK or the CCPA in California), you may have rights to access, correct or delete your personal data, or to opt out of certain processing. Because we do not maintain user accounts or store personal data on our servers, most requests can be satisfied by uninstalling the App (which stops all diagnostic collection) and deleting your local files. For any request regarding Firebase-collected diagnostic data, contact us using the details below.

10. International Users

Diagnostic and analytics data may be processed on Google's servers, which may be located outside your country. By using the App you consent to such processing in accordance with Google's applicable terms.

11. Changes to This Policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page. Continued use of the App after changes take effect constitutes acceptance of the updated policy.

12. Contact Us

If you have questions or concerns about this Privacy Policy, contact us at:

Email: trinhvanbien@gmail.com