**Last Updated:** January 21, 2026 **Vocab Highlighter - 生词标记** ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how our Chrome extension collects, uses, and discloses your information. ### 1. Information Collection and Use **a. Webpage Content (Local Processing)** To provide our core service of highlighting vocabulary, the extension requires permission to read the text content of the web pages you visit. - **How it works:** This processing happens entirely **locally** on your device. - **No Transmission:** We do **not** transmit, store, or analyze your browsing history or the content of the web pages on any external servers. The text is analyzed solely within your browser to identify and highlight words. **b. User Settings and Vocabulary Data** Any vocabulary lists, learning progress, or custom settings you create are stored locally in your browser (using `chrome.storage.local` or `chrome.storage.sync`). - If you use Chrome's sync feature, this data may be synced across your devices via Google's encrypted sync services, but it is not accessible to us or any third parties. ### 2. Data Sharing and Disclosure We do **not** sell, trade, or otherwise transfer your personally identifiable information or browsing data to outside parties. ### 3. Third-Party Services This extension operates independently and does not utilize third-party analytics tools (like Google Analytics) or advertising networks that track your behavior. ### 4. Data Security We rely on the security measures provided by the Chrome browser and Google’s infrastructure to protect your local data. Since we do not maintain our own servers for user data storage, your data remains as secure as your local device. ### 5. Changes to This Privacy Policy We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page. You are advised to review this Privacy Policy periodically for any changes. ### 6. Contact Us If you have any questions about this Privacy Policy, please contact us at: **Email:** [email protected]