Privacy Policy

Last updated: March 2026

Hörverstehen does not collect, store, or transmit any personal data. Everything happens locally in your browser.

What the extension does

Hörverstehen is a German listening practice tool for YouTube. It reads the transcript panel that YouTube already displays on the page and converts the subtitle text into interactive fill-in-the-blank exercises. It does not download, export, or save subtitle data.

Data collection

No personal data is collected
No analytics or tracking of any kind is used
No data is sent to any server, third party, or remote endpoint
No cookies are set by this extension
No browsing history is recorded or transmitted

Permissions explained

Permission	Why it is needed
`activeTab`	Allows the extension to detect whether you are on a YouTube video page when you click the extension icon, in order to show a status indicator in the popup.
`MAIN` world script	Required to read YouTube's transcript panel DOM and internal player API, which are not accessible from an isolated content script. This access is read-only and limited to subtitle and transcript data.

Data storage

The extension does not use chrome.storage, localStorage, or any other persistence mechanism. All exercise state — scores, answers, difficulty settings — exists only in memory and is lost when you close or navigate away from the page.

Third-party services

This extension does not communicate with any third-party services. It only interacts with the YouTube page you are currently viewing.

Changes

If this privacy policy changes, the updated version will be published alongside the extension update.

Contact

If you have questions about this policy, please open an issue on the extension's GitHub repository.