# Privacy Policy for Untis Extension

**Last Updated:** August 18, 2025

## Overview

Untis Extension ("we", "our", or "the extension") is committed to protecting your privacy. This privacy policy explains how our browser extension handles information when you use it to enhance your WebUntis timetable experience.

## Information We Collect

### Website Content

-   The extension reads WebUntis timetable page content to identify lesson elements for enhancement features
-   This includes lesson titles, times, and scheduling information displayed on your timetable
-   No personal identifying information is extracted or processed

### Local Data Storage

-   User preferences (such as lessons marked as cancelled) are stored locally on your device using browser cookies
-   GUI visibility preferences are stored locally
-   All data remains on your computer and is never transmitted externally

## Information We Do NOT Collect

We do not collect, store, or transmit:

-   Personal identifying information (name, email, address, etc.)
-   Authentication credentials or login information
-   Financial or payment information
-   Health information
-   Personal communications
-   Location data
-   Browsing history outside of WebUntis
-   Any data to external servers

## How We Use Information

The extension uses locally stored data to:

-   Remember which lessons you've marked as cancelled
-   Restore your preferences when you reload WebUntis pages
-   Maintain GUI visibility settings
-   Provide enhanced timetable functionality

## Data Storage and Security

-   All data is stored locally on your device using browser cookies
-   No data is transmitted to external servers or third parties
-   You can clear extension data by clearing your browser cookies
-   Data persists only as long as you keep the extension installed and cookies enabled

## Third-Party Access

-   We do not sell, trade, or transfer your data to third parties
-   We do not use your data for purposes unrelated to the extension's functionality
-   We do not use your data for creditworthiness or lending purposes
-   The extension operates entirely within your browser

## Data Retention

-   Local data persists until you manually clear browser cookies or uninstall the extension
-   No data is retained on external servers
-   You have full control over your data at all times

## Your Rights

You can:

-   Clear all extension data by clearing browser cookies
-   Disable the extension at any time
-   Uninstall the extension to remove all associated data
-   View what data is stored locally through browser developer tools

## Children's Privacy

This extension does not knowingly collect any information from children under 13. The extension is designed for educational use and operates without collecting personal information.

## Changes to This Policy

We may update this privacy policy from time to time. Any changes will be reflected in the "Last Updated" date above. Continued use of the extension after changes constitutes acceptance of the new policy.

## Contact Information

If you have questions about this privacy policy or the extension's data practices, please contact us through the Chrome Web Store support channels.

## Compliance

This extension complies with:

-   Chrome Web Store Developer Program Policies
-   General Data Protection Regulation (GDPR) principles
-   California Consumer Privacy Act (CCPA) requirements
-   Local browser data storage best practices

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**Summary:** Untis Extension enhances your WebUntis experience while keeping all your data private and secure on your own device. We don't collect personal information or transmit any data externally.