This privacy policy applies to the browser extension Eink Mode. We only process data to the extent necessary to provide functionality and strive to use local storage.

1. Data We Collect and Process

  • Configuration Data: Theme, language preferences, shortcut settings, font size settings, version and policy notice status, etc.
  • Reading State Data: Website Eink Mode activation status and necessary session status.
  • User-Created Content (Local): Highlighted notes, annotations, tags, handwritten or drawn strokes, etc. (including corresponding page URLs and titles).
  • Anonymous Analytics Identifier: Randomly generated installation identifier and session identifier.

2. Data Storage Location and Method

  • Mainly stored in the browser extension storage (e.g., chrome.storage) and IndexedDB.
  • The current version does not use cookies as the primary storage mechanism.
  • Some data related to session may be reset after browser restarts.

3. Permissions and Uses

  • Storage Permission: Used to save settings, reading states, and local notes/highlighting data.
  • Network Host Access Permission: Only used for the following services: https://www.google-analytics.com/ and https://bacink.com/.

4. Data Transmission

  • Google Analytics 4 (GA4): Transmit anonymous event data (e.g., frequency of feature usage, mode switching, page navigation, and theme switching) for product quality and function improvement.
  • BacInk API: Requests article summary data required to update news and privacy policy links from https://bacink.com/backend/api/blog.php.

5. Things We Won't Do

  • We do not actively collect data that can directly identify individuals, such as names, emails, phone numbers, etc.
  • We do not transmit full browsing URLs, URL paths, query parameters, or domains as part of the analytical content.
  • We will not sell your personal data.
  • We will not automatically upload your highlights, notes, or handwritten content to our servers under normal usage scenarios.

6. Data Retention and Deletion

  • Local data will remain in your browser until you clear browser/extension data or remove the extension.
  • Remote analytic data is managed by Google Analytics according to its service policies and retention settings.

7. Your Control

You can control the retention of local data and related functional behavior by clearing browser data, removing extensions, and adjusting browser permissions.

8. Policy Updates

This policy may be updated due to functional or regulatory requirements, and updates will be published on this page along with an adjustment to the "last updated" date.

9. Contact Us

If you have questions about this privacy policy, please contact: bacink.contact@gmail.com

Using Eink Mode indicates that you have read and agree to this privacy policy.

Last updated: March 8, 2026