Privacy Policy - Subtitle Learning Assistant
Last updated: August 10, 2025
Overview
We take your privacy seriously. This privacy policy explains how the Subtitle Learning Assistant Chrome Extension collects, uses, and protects your information.
Information Collection
Information We Collect
- Subtitle Text: Subtitle content captured from YouTube and Netflix pages, used only for translation and learning features
- Vocabulary Data: Words you click and their context, stored locally in your browser
- Usage Statistics: Word click counts, learning progress, etc., stored locally only
Information We Don't Collect
- Personal identification information
- Browsing history
- Account login information
- Video viewing records
Data Storage
- Local Storage: All user data is stored locally on your device using Chrome Extension Storage API
- No Server Storage: We do not store any personal user data on servers
- User Control: You have complete control over your data and can clear it at any time
Data Usage
How We Use Data
- Provide subtitle translation services
- Manage personal vocabulary lists
- Display learning statistics
- Improve user experience
Third-Party Services
- Translation API: Uses secure translation API for text translation. Transmitted text is used only for translation and not stored on third-party servers
- Network Requests: Only sends necessary text content to translation APIs
Permissions
Chrome Permissions
- storage: Store vocabulary and settings
- activeTab: Access current tab's subtitle content
- host_permissions: Limited to YouTube and Netflix domains only
Permission Usage
All permissions are used solely for core functionality, not for data collection or advertising.
Children's Privacy
This extension is not specifically designed for children under 13, and we do not knowingly collect personal information from children.
Data Security
- Uses HTTPS encrypted transmission
- Local data uses Chrome secure storage
- Regular security updates
User Rights
Your Rights
- View stored data at any time
- Delete all local data
- Uninstall extension to completely remove data
- Export personal vocabulary data
Data Deletion
- Click "Clear All Data" in extension settings
- Uninstalling the extension automatically deletes all data
Cookies and Tracking
- No cookies used for tracking
- No analytics data collection
- No ads or third-party tracking
Policy Updates
- Users will be notified of privacy policy updates through the extension
- Major changes require user re-consent
By using the Subtitle Learning Assistant, you agree to the terms of this privacy policy.