# Volume Controller Privacy Policy
## Overview
Volume Controller ("our extension", "the plugin") is committed to protecting your privacy. This privacy policy explains how we collect, use, and protect your information when you use our browser extension.
## Information We Collect
### Data We Collect
Our extension only collects the following necessary information to provide core functionality:
1. **Website Domain Information**
- Purpose: Identify and save volume settings for specific websites
- Collection Method: Automatically obtained when you adjust website volume
- Examples: www.youtube.com, www.bilibili.com
2. **Volume Setting Data**
- Purpose: Remember your volume preferences for each website
- Collection Method: When you use volume sliders to adjust volume
- Data Type: Numerical values between 0.0 and 1.0
3. **Website Icons (favicon)**
- Purpose: Display website icons in the plugin interface for better user experience
- Collection Method: Retrieved from browser tab information
- Usage: Interface display only
### Data We Do NOT Collect
- ❌ Personal identifying information (name, email, phone, etc.)
- ❌ Browsing history
- ❌ Web page content or sensitive data
- ❌ User location information
- ❌ Login credentials or passwords
- ❌ Audio content itself
## Data Storage and Processing
### Local Storage
- **Storage Location:** All data is stored locally on your device using Chrome's local storage API (chrome.storage.local)
- **Storage Content:** Only includes website domains, corresponding volume settings, and website icons
- **Access Rights:** Only our extension can access this data
### Data Security
- Data Encryption: Uses standard encryption mechanisms provided by the browser
- Access Control: Data is limited to internal plugin use only
- Transmission Security: No network transmission involved, all data processing is local
## Permission Usage
Our extension requests the following permissions for core functionality only:
1. **"tabCapture" Permission**
- Purpose: Control tab audio streams to implement volume adjustment functionality
- Scope: Limited to the current active tab only
- Data Processing: Does not record or store audio content
2. **"activeTab" Permission**
- Purpose: Interact with media elements on the current tab
- Scope: Limited to tabs where user actively operates
- Data Processing: Detect and control audio/video elements
3. **"storage" Permission**
- Purpose: Save volume setting preferences locally
- Scope: Limited to plugin-related data only
- Data Processing: Read and write volume configuration information
4. **"tabs" Permission**
- Purpose: Obtain basic tab information (domain, icon)
- Scope: Only retrieves necessary identification information
- Data Processing: Does not access page content
## Data Usage
### Usage Purposes
Collected data is used solely for the following purposes:
- Save and apply volume settings for each website
- Display website list and icons in the plugin interface
- Provide personalized volume control experience
### Data Processing Principles
- **Minimization Principle:** Only collect the minimum data necessary for functionality
- **Purpose Limitation:** Data is used only for declared functional purposes
- **Accuracy:** Ensure data accuracy and timely updates
- **Transparency:** Maintain complete transparency in data processing
## Data Sharing
### We Do NOT Share Your Data
- ❌ Do not sell personal data to third parties
- ❌ Do not share data with advertisers
- ❌ Do not perform data mining or analytics
- ❌ Do not upload data to external servers
### Only Exception
Only when legally required, we may need to disclose information to:
- Comply with applicable laws and regulations
- Respond to legitimate requests from government authorities
- Protect the rights and safety of users and the public
## User Rights and Control
### Your Rights
- **Access Right:** You can view plugin-stored data at any time
- **Deletion Right:** You can delete specific website settings or clear all data at any time
- **Control Right:** You can enable or disable the plugin at any time
### Data Management
- **View Data:** Click the plugin icon to view all saved website settings
- **Delete Individual Settings:** Remove specific website volume settings in the plugin interface
- **Clear All Data:** Uninstalling the plugin automatically clears all related data
- **Export Settings:** Backup settings through browser extension management features
## Children's Privacy
Our extension is not specifically directed at children under 13. 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 immediately delete the relevant information.
## Data Retention
- **Retention Period:** Data is retained until you actively delete it or uninstall the plugin
- **Automatic Deletion:** All related data is automatically removed from your device when the plugin is uninstalled
- **User Control:** You can manage and delete data through the plugin interface at any time
## Security Measures
We implement the following measures to protect your information:
- Use secure storage APIs provided by the browser
- Implement principle of least privilege
- Regular security reviews and updates
- No transmission of sensitive data to external services
## Privacy Policy Updates
### Update Notifications
If we make significant changes to this privacy policy, we will:
- Update the "Last Updated" date in this document
- Notify users through plugin updates when possible
- Post update announcements on our official channels
### Continued Use
Continuing to use the plugin after privacy policy updates indicates your agreement to the revised policy.
## Third-Party Services
### Browser APIs
Our plugin uses the following browser-provided APIs:
- Chrome Extensions API
- Chrome Storage API
- Chrome Tab Capture API
These APIs are managed by browser providers (such as Google) and are subject to their respective privacy policies.
### No External Dependencies
Our plugin does not depend on any third-party services or libraries; all functionality runs locally.
## Legal Basis (GDPR Compliance)
Under the General Data Protection Regulation (GDPR), our legal basis for processing your data is:
- **Consent:** Installing and using the plugin indicates consent to data processing
- **Legitimate Interest:** Legitimate interest in providing volume control functionality
## Contact Us
If you have any questions or concerns about this privacy policy, please contact us through:
- **Email:** [Please fill in your contact email]
- **Issue Reporting:** [Please fill in your feedback channel, such as GitHub Issues link]
## Governing Law
This privacy policy is governed by and interpreted in accordance with the laws of [Please fill in applicable legal jurisdiction].
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**Disclaimer:** This privacy policy template is based on common extension functionality and best practices. Before publication, it is recommended to consult with legal professionals to ensure full compliance with legal requirements in your jurisdiction.