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.