# PDFMaster Privacy Policy
**Effective Date:** March 6, 2026
**Last Updated:** March 6, 2026
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## 1. Introduction
Welcome to PDFMaster (hereinafter referred to as "the App", "we", "us", or "our"). We value your privacy and are committed to protecting your personal information. This Privacy Policy explains how we collect, use, store, and protect your information when you use the App.
By using the App, you agree to the practices described in this Privacy Policy. If you do not agree with this policy, please do not use the App.
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## 2. Information Collection
### 2.1 Information We Collect
**Local File Access**
- The App requires access to PDF files on your device to provide reading functionality
- We only read PDF files that you actively choose to open
- File contents are stored entirely on your local device and are never uploaded to any server
**Usage Data**
- List of recently opened files (file path, file name, open time, reading progress)
- Annotations and highlights you create
- App settings preferences (night mode, zoom level, scrolling direction, etc.)
- All this data is stored only in your device's local database
**Advertising-Related Information**
- To display ads, Google AdMob may collect the following information:
- Device identifiers (Advertising ID)
- IP address
- Device model and operating system version
- App usage statistics
- Ad interaction data
### 2.2 Information We Do NOT Collect
- We do not collect your name, email, or other personally identifiable information
- We do not read or upload your PDF file contents
- We do not access your contacts, photos, messages, or other personal data
- We do not track your location information
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## 3. Information Use
### 3.1 How We Use Your Information
**Providing Core Functionality**
- Open and display PDF files
- Save reading progress and bookmarks
- Store your annotations and highlights
- Remember your app settings
**Improving User Experience**
- Display recently opened files list
- Quick access to frequently used documents
- Maintain your personalized settings
**Advertising Display**
- Display relevant ads through Google AdMob
- Support ongoing app development and maintenance
### 3.2 Data Storage
- All app data (recent files, annotations, settings) is stored only on your local device
- We do not operate any servers to store your data
- Your PDF files and annotations are entirely under your control
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## 4. Third-Party Services
### 4.1 Google AdMob
The App uses Google AdMob to display advertisements. AdMob may collect and use certain information to provide personalized ads.
**Information Collected by AdMob:**
- Advertising identifiers
- Device information
- Usage data
- IP address
**AdMob Privacy Policy:**
https://policies.google.com/privacy
**Ad Personalization Controls:**
You can manage ad preferences through your device settings:
- Android: Settings > Google > Ads > Opt out of Ads Personalization
### 4.2 Other Third-Party Services
The App does not integrate other third-party analytics, tracking, or data collection services.
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## 5. Permissions Explained
The App requests the following permissions:
**Storage Permission (READ_EXTERNAL_STORAGE / MANAGE_EXTERNAL_STORAGE)**
- Purpose: Access and open PDF files on your device
- Necessity: Required for core functionality
- We only access PDF files you actively choose
**Network Permission (INTERNET)**
- Purpose: Load and display advertisements
- Necessity: Supports free app operation
- Not used to upload your personal data or files
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## 6. Data Security
We take reasonable technical measures to protect your data:
- All data is stored on your local device, protected by Android system security mechanisms
- We do not transmit your PDF files or annotations to external servers
- The App is developed using Android standard security practices
However, please note that no method can guarantee 100% data security. You are responsible for protecting your device security (such as setting a lock screen password).
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## 7. Children's Privacy
The App is not designed for children under 13, and we do not knowingly collect personal information from children. If you are a parent or guardian and discover that your child has provided us with personal information, please contact us, and we will take steps to delete such information.
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## 8. Data Retention and Deletion
**Data Retention**
- Recent files list, annotations, and settings will remain on your device until you manually delete them or uninstall the App
**Deleting Your Data**
You can delete your data at any time:
- Clear recent files history in app settings
- Delete individual annotations or highlights
- Uninstalling the App will delete all locally stored app data
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## 9. Your Rights
Under applicable data protection laws, you have the following rights:
- **Right to Access**: You can view your data in the App at any time
- **Right to Deletion**: You can delete recent file records and annotations
- **Right to Control**: You have full control over which PDF files the App accesses
- **Right to Withdraw**: You can uninstall the App at any time
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## 10. International Data Transfers
The App primarily operates locally on your device. However, Google AdMob may transfer data to its global servers. These transfers are governed by Google's Privacy Policy.
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## 11. Privacy Policy Changes
We may update this Privacy Policy from time to time. For significant changes, we will:
- Update the "Last Updated" date at the top of this page
- Notify you within the App (if applicable)
- In some cases, request your renewed consent
We recommend that you periodically review this Privacy Policy to stay informed.
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## 12. California Residents' Rights (CCPA)
If you are a California resident, you have the following additional rights:
- Know the categories of personal information we collect
- Know the purposes for using personal information
- Request deletion of your personal information
- Opt-out of the sale of personal information (Note: We do not sell personal information)
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## 13. EU Residents' Rights (GDPR)
If you are an EU resident, you have the following rights:
- Access your personal data
- Rectify inaccurate data
- Erase your data ("right to be forgotten")
- Restrict processing
- Data portability
- Object to processing
Since the App primarily operates locally, you can exercise these rights through app settings or by uninstalling the App.
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## 14. Contact Us
If you have any questions, comments, or requests regarding this Privacy Policy, please contact us:
**Email:** [Your Contact Email]
**Response Time:** We will respond within 30 days of receiving your request
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## 15. Legal Basis (GDPR)
We process your data based on the following legal grounds:
- **Contract Performance**: Providing the PDF reading services you request
- **Legitimate Interests**: Improving app functionality and user experience
- **Consent**: Displaying personalized ads (you can withdraw consent at any time)
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## 16. Data Protection Officer
As we do not collect or process large amounts of personal data, we have not currently appointed a Data Protection Officer. For privacy-related questions, please contact us using the information above.
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## 17. Dispute Resolution
If you have any complaints about our privacy practices:
1. First contact us using the information above
2. If you are in the EU, you have the right to lodge a complaint with your local data protection authority
3. If you are in California, you can contact the California Attorney General's office
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## 18. Disclaimer
The App is provided "as is". While we strive to protect your privacy and data security, we are not responsible for:
- Security vulnerabilities on your device
- Data practices of third-party services (such as AdMob)
- Information you voluntarily share or disclose
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**Thank you for using PDFMaster!**
We are committed to protecting your privacy while providing you with an excellent PDF reading experience. If you have any questions or concerns, please feel free to contact us.
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*This Privacy Policy is authoritative in its English version. If there are any conflicts between translated versions and the English version, the English version shall prevail.*